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• Project Euler 8: (Iron)Python

  - by Ben Griswold

  In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 8.  As always, any feedback is welcome. # Euler 8 # http://projecteuler.net/index.php?section=problems&id=8 # Find the greatest product of five consecutive digits # in the following 1000-digit number import time start = time.time() number = '\ 73167176531330624919225119674426574742355349194934\ 96983520312774506326239578318016984801869478851843\ 85861560789112949495459501737958331952853208805511\ 12540698747158523863050715693290963295227443043557\ 66896648950445244523161731856403098711121722383113\ 62229893423380308135336276614282806444486645238749\ 30358907296290491560440772390713810515859307960866\ 70172427121883998797908792274921901699720888093776\ 65727333001053367881220235421809751254540594752243\ 52584907711670556013604839586446706324415722155397\ 53697817977846174064955149290862569321978468622482\ 83972241375657056057490261407972968652414535100474\ 82166370484403199890008895243450658541227588666881\ 16427171479924442928230863465674813919123162824586\ 17866458359124566529476545682848912883142607690042\ 24219022671055626321111109370544217506941658960408\ 07198403850962455444362981230987879927244284909188\ 84580156166097919133875499200524063689912560717606\ 05886116467109405077541002256983155200055935729725\ 71636269561882670428252483600823257530420752963450' max = 0 for i in xrange(0, len(number) - 5): nums = [int(x) for x in number[i:i+5]] val = reduce(lambda agg, x: agg*x, nums) if val > max: max = val print max print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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• How to get current connection settings

  - by Peter Larsson

  SELECT name AS Setting,         CASE             WHEN @@OPTIONS & number = number THEN 'ON'             ELSE 'OFF'         END AS Value FROM    master..spt_values WHERE   type= 'SOP'         AND number > 0

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• Acer aspire 5735z wireless not working after upgrade to 11.10

  - by Jon

  I cant get my wifi card to work at all after upgrading to 11.10 Oneiric. I'm not sure where to start to fix this. Ive tried using the additional drivers tool but this shows that no additional drivers are needed. Before my upgrade I had a drivers working for the Rt2860 chipset. Any help on this would be much appreciated.... thanks Jon jon@ubuntu:~$ ifconfig eth0 Link encap:Ethernet HWaddr 00:1d:72:ec:76:d5 inet addr:192.168.1.134 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21d:72ff:feec:76d5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7846 errors:0 dropped:0 overruns:0 frame:0 TX packets:7213 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8046624 (8.0 MB) TX bytes:1329442 (1.3 MB) Interrupt:16 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:91 errors:0 dropped:0 overruns:0 frame:0 TX packets:91 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:34497 (34.4 KB) TX bytes:34497 (34.4 KB) Ive included by dmesg output below [ 0.428818] NET: Registered protocol family 2 [ 0.429003] IP route cache hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.430562] TCP established hash table entries: 524288 (order: 11, 8388608 bytes) [ 0.436614] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes) [ 0.437409] TCP: Hash tables configured (established 524288 bind 65536) [ 0.437412] TCP reno registered [ 0.437431] UDP hash table entries: 2048 (order: 4, 65536 bytes) [ 0.437482] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes) [ 0.437678] NET: Registered protocol family 1 [ 0.437705] pci 0000:00:02.0: Boot video device [ 0.437892] PCI: CLS 64 bytes, default 64 [ 0.437916] Simple Boot Flag at 0x57 set to 0x1 [ 0.438294] audit: initializing netlink socket (disabled) [ 0.438309] type=2000 audit(1319243447.432:1): initialized [ 0.440763] Freeing initrd memory: 13416k freed [ 0.468362] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 0.488192] VFS: Disk quotas dquot_6.5.2 [ 0.488254] Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.488888] fuse init (API version 7.16) [ 0.488985] msgmni has been set to 5890 [ 0.489381] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) [ 0.489413] io scheduler noop registered [ 0.489415] io scheduler deadline registered [ 0.489460] io scheduler cfq registered (default) [ 0.489583] pcieport 0000:00:1c.0: setting latency timer to 64 [ 0.489633] pcieport 0000:00:1c.0: irq 40 for MSI/MSI-X [ 0.489699] pcieport 0000:00:1c.1: setting latency timer to 64 [ 0.489741] pcieport 0000:00:1c.1: irq 41 for MSI/MSI-X [ 0.489800] pcieport 0000:00:1c.2: setting latency timer to 64 [ 0.489841] pcieport 0000:00:1c.2: irq 42 for MSI/MSI-X [ 0.489904] pcieport 0000:00:1c.3: setting latency timer to 64 [ 0.489944] pcieport 0000:00:1c.3: irq 43 for MSI/MSI-X [ 0.490006] pcieport 0000:00:1c.4: setting latency timer to 64 [ 0.490047] pcieport 0000:00:1c.4: irq 44 for MSI/MSI-X [ 0.490126] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 0.490149] pciehp: PCI Express Hot Plug Controller Driver version: 0.4 [ 0.490196] intel_idle: MWAIT substates: 0x1110 [ 0.490198] intel_idle: does not run on family 6 model 15 [ 0.491240] ACPI: Deprecated procfs I/F for AC is loaded, please retry with CONFIG_ACPI_PROCFS_POWER cleared [ 0.493473] ACPI: AC Adapter [ADP1] (on-line) [ 0.493590] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input0 [ 0.496771] ACPI: Lid Switch [LID0] [ 0.496818] input: Sleep Button as /devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input1 [ 0.496823] ACPI: Sleep Button [SLPB] [ 0.496865] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input2 [ 0.496869] ACPI: Power Button [PWRF] [ 0.496900] ACPI: acpi_idle registered with cpuidle [ 0.498719] Monitor-Mwait will be used to enter C-1 state [ 0.498753] Monitor-Mwait will be used to enter C-2 state [ 0.498761] Marking TSC unstable due to TSC halts in idle [ 0.517627] thermal LNXTHERM:00: registered as thermal_zone0 [ 0.517630] ACPI: Thermal Zone [TZS0] (67 C) [ 0.524796] thermal LNXTHERM:01: registered as thermal_zone1 [ 0.524799] ACPI: Thermal Zone [TZS1] (67 C) [ 0.524823] ACPI: Deprecated procfs I/F for battery is loaded, please retry with CONFIG_ACPI_PROCFS_POWER cleared [ 0.524852] ERST: Table is not found! [ 0.524948] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled [ 0.680991] ACPI: Battery Slot [BAT0] (battery present) [ 0.688567] Linux agpgart interface v0.103 [ 0.688672] agpgart-intel 0000:00:00.0: Intel GM45 Chipset [ 0.688865] agpgart-intel 0000:00:00.0: detected gtt size: 2097152K total, 262144K mappable [ 0.689786] agpgart-intel 0000:00:00.0: detected 65536K stolen memory [ 0.689912] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000 [ 0.691006] brd: module loaded [ 0.691510] loop: module loaded [ 0.691967] Fixed MDIO Bus: probed [ 0.691990] PPP generic driver version 2.4.2 [ 0.692065] tun: Universal TUN/TAP device driver, 1.6 [ 0.692067] tun: (C) 1999-2004 Max Krasnyansky <[email protected]> [ 0.692146] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.692181] ehci_hcd 0000:00:1a.7: PCI INT C -> GSI 20 (level, low) -> IRQ 20 [ 0.692206] ehci_hcd 0000:00:1a.7: setting latency timer to 64 [ 0.692210] ehci_hcd 0000:00:1a.7: EHCI Host Controller [ 0.692255] ehci_hcd 0000:00:1a.7: new USB bus registered, assigned bus number 1 [ 0.692289] ehci_hcd 0000:00:1a.7: debug port 1 [ 0.696181] ehci_hcd 0000:00:1a.7: cache line size of 64 is not supported [ 0.696202] ehci_hcd 0000:00:1a.7: irq 20, io mem 0xf8904800 [ 0.712014] ehci_hcd 0000:00:1a.7: USB 2.0 started, EHCI 1.00 [ 0.712131] hub 1-0:1.0: USB hub found [ 0.712136] hub 1-0:1.0: 6 ports detected [ 0.712230] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) -> IRQ 23 [ 0.712243] ehci_hcd 0000:00:1d.7: setting latency timer to 64 [ 0.712247] ehci_hcd 0000:00:1d.7: EHCI Host Controller [ 0.712287] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 2 [ 0.712315] ehci_hcd 0000:00:1d.7: debug port 1 [ 0.716201] ehci_hcd 0000:00:1d.7: cache line size of 64 is not supported [ 0.716216] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xf8904c00 [ 0.732014] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00 [ 0.732130] hub 2-0:1.0: USB hub found [ 0.732135] hub 2-0:1.0: 6 ports detected [ 0.732209] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.732223] uhci_hcd: USB Universal Host Controller Interface driver [ 0.732254] uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20 [ 0.732262] uhci_hcd 0000:00:1a.0: setting latency timer to 64 [ 0.732265] uhci_hcd 0000:00:1a.0: UHCI Host Controller [ 0.732298] uhci_hcd 0000:00:1a.0: new USB bus registered, assigned bus number 3 [ 0.732325] uhci_hcd 0000:00:1a.0: irq 20, io base 0x00001820 [ 0.732441] hub 3-0:1.0: USB hub found [ 0.732445] hub 3-0:1.0: 2 ports detected [ 0.732508] uhci_hcd 0000:00:1a.1: PCI INT B -> GSI 20 (level, low) -> IRQ 20 [ 0.732514] uhci_hcd 0000:00:1a.1: setting latency timer to 64 [ 0.732518] uhci_hcd 0000:00:1a.1: UHCI Host Controller [ 0.732553] uhci_hcd 0000:00:1a.1: new USB bus registered, assigned bus number 4 [ 0.732577] uhci_hcd 0000:00:1a.1: irq 20, io base 0x00001840 [ 0.732696] hub 4-0:1.0: USB hub found [ 0.732700] hub 4-0:1.0: 2 ports detected [ 0.732762] uhci_hcd 0000:00:1a.2: PCI INT C -> GSI 20 (level, low) -> IRQ 20 [ 0.732768] uhci_hcd 0000:00:1a.2: setting latency timer to 64 [ 0.732772] uhci_hcd 0000:00:1a.2: UHCI Host Controller [ 0.732805] uhci_hcd 0000:00:1a.2: new USB bus registered, assigned bus number 5 [ 0.732829] uhci_hcd 0000:00:1a.2: irq 20, io base 0x00001860 [ 0.732942] hub 5-0:1.0: USB hub found [ 0.732946] hub 5-0:1.0: 2 ports detected [ 0.733007] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23 [ 0.733014] uhci_hcd 0000:00:1d.0: setting latency timer to 64 [ 0.733017] uhci_hcd 0000:00:1d.0: UHCI Host Controller [ 0.733057] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 6 [ 0.733082] uhci_hcd 0000:00:1d.0: irq 23, io base 0x00001880 [ 0.733202] hub 6-0:1.0: USB hub found [ 0.733206] hub 6-0:1.0: 2 ports detected [ 0.733265] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 0.733273] uhci_hcd 0000:00:1d.1: setting latency timer to 64 [ 0.733276] uhci_hcd 0000:00:1d.1: UHCI Host Controller [ 0.733313] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 7 [ 0.733351] uhci_hcd 0000:00:1d.1: irq 17, io base 0x000018a0 [ 0.733466] hub 7-0:1.0: USB hub found [ 0.733470] hub 7-0:1.0: 2 ports detected [ 0.733532] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18 [ 0.733539] uhci_hcd 0000:00:1d.2: setting latency timer to 64 [ 0.733542] uhci_hcd 0000:00:1d.2: UHCI Host Controller [ 0.733578] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 8 [ 0.733610] uhci_hcd 0000:00:1d.2: irq 18, io base 0x000018c0 [ 0.733730] hub 8-0:1.0: USB hub found [ 0.733736] hub 8-0:1.0: 2 ports detected [ 0.733843] i8042: PNP: PS/2 Controller [PNP0303:KBD0,PNP0f13:PS2M] at 0x60,0x64 irq 1,12 [ 0.751594] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 0.751605] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 0.751732] mousedev: PS/2 mouse device common for all mice [ 0.752670] rtc_cmos 00:08: RTC can wake from S4 [ 0.752770] rtc_cmos 00:08: rtc core: registered rtc_cmos as rtc0 [ 0.752796] rtc0: alarms up to one month, y3k, 242 bytes nvram, hpet irqs [ 0.752907] device-mapper: uevent: version 1.0.3 [ 0.752976] device-mapper: ioctl: 4.20.0-ioctl (2011-02-02) initialised: [email protected] [ 0.753028] cpuidle: using governor ladder [ 0.753093] cpuidle: using governor menu [ 0.753096] EFI Variables Facility v0.08 2004-May-17 [ 0.753361] TCP cubic registered [ 0.753482] NET: Registered protocol family 10 [ 0.753966] NET: Registered protocol family 17 [ 0.753992] Registering the dns_resolver key type [ 0.754113] PM: Hibernation image not present or could not be loaded. [ 0.754131] registered taskstats version 1 [ 0.771553] Magic number: 15:152:507 [ 0.771667] rtc_cmos 00:08: setting system clock to 2011-10-22 00:30:48 UTC (1319243448) [ 0.772238] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found [ 0.772240] EDD information not available. [ 0.774165] Freeing unused kernel memory: 984k freed [ 0.774504] Write protecting the kernel read-only data: 10240k [ 0.774755] Freeing unused kernel memory: 20k freed [ 0.775093] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input3 [ 0.779727] Freeing unused kernel memory: 1400k freed [ 0.801946] udevd[84]: starting version 173 [ 0.880950] sky2: driver version 1.28 [ 0.881046] sky2 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 0.881096] sky2 0000:02:00.0: setting latency timer to 64 [ 0.881197] sky2 0000:02:00.0: Yukon-2 Extreme chip revision 2 [ 0.881871] sky2 0000:02:00.0: irq 45 for MSI/MSI-X [ 0.896273] sky2 0000:02:00.0: eth0: addr 00:1d:72:ec:76:d5 [ 0.910630] ahci 0000:00:1f.2: version 3.0 [ 0.910647] ahci 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 [ 0.910710] ahci 0000:00:1f.2: irq 46 for MSI/MSI-X [ 0.910775] ahci: SSS flag set, parallel bus scan disabled [ 0.910812] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 4 ports 3 Gbps 0x33 impl SATA mode [ 0.910816] ahci 0000:00:1f.2: flags: 64bit ncq sntf stag pm led clo pio slum part ccc ems sxs [ 0.910821] ahci 0000:00:1f.2: setting latency timer to 64 [ 0.941773] scsi0 : ahci [ 0.941954] scsi1 : ahci [ 0.942038] scsi2 : ahci [ 0.942118] scsi3 : ahci [ 0.942196] scsi4 : ahci [ 0.942268] scsi5 : ahci [ 0.942332] ata1: SATA max UDMA/133 abar m2048@0xf8904000 port 0xf8904100 irq 46 [ 0.942336] ata2: SATA max UDMA/133 abar m2048@0xf8904000 port 0xf8904180 irq 46 [ 0.942339] ata3: DUMMY [ 0.942340] ata4: DUMMY [ 0.942344] ata5: SATA max UDMA/133 abar m2048@0xf8904000 port 0xf8904300 irq 46 [ 0.942347] ata6: SATA max UDMA/133 abar m2048@0xf8904000 port 0xf8904380 irq 46 [ 1.028061] usb 1-5: new high speed USB device number 2 using ehci_hcd [ 1.181775] usbcore: registered new interface driver uas [ 1.260062] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 1.261126] ata1.00: ATA-8: Hitachi HTS543225L9A300, FBEOC40C, max UDMA/133 [ 1.261129] ata1.00: 488397168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA [ 1.262360] ata1.00: configured for UDMA/133 [ 1.262518] scsi 0:0:0:0: Direct-Access ATA Hitachi HTS54322 FBEO PQ: 0 ANSI: 5 [ 1.262716] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 1.262762] sd 0:0:0:0: [sda] 488397168 512-byte logical blocks: (250 GB/232 GiB) [ 1.262824] sd 0:0:0:0: [sda] Write Protect is off [ 1.262827] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 [ 1.262851] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 1.287277] sda: sda1 sda2 sda3 [ 1.287693] sd 0:0:0:0: [sda] Attached SCSI disk [ 1.580059] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 1.581188] ata2.00: ATAPI: HL-DT-STDVDRAM GT10N, 1.00, max UDMA/100 [ 1.582663] ata2.00: configured for UDMA/100 [ 1.584162] scsi 1:0:0:0: CD-ROM HL-DT-ST DVDRAM GT10N 1.00 PQ: 0 ANSI: 5 [ 1.585821] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray [ 1.585824] cdrom: Uniform CD-ROM driver Revision: 3.20 [ 1.585953] sr 1:0:0:0: Attached scsi CD-ROM sr0 [ 1.586038] sr 1:0:0:0: Attached scsi generic sg1 type 5 [ 1.632061] usb 6-1: new low speed USB device number 2 using uhci_hcd [ 1.908056] ata5: SATA link down (SStatus 0 SControl 300) [ 2.228065] ata6: SATA link down (SStatus 0 SControl 300) [ 2.228955] Initializing USB Mass Storage driver... [ 2.229052] usbcore: registered new interface driver usb-storage [ 2.229054] USB Mass Storage support registered. [ 2.235827] scsi6 : usb-storage 1-5:1.0 [ 2.235987] usbcore: registered new interface driver ums-realtek [ 2.244451] input: B16_b_02 USB-PS/2 Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb6/6-1/6-1:1.0/input/input4 [ 2.244598] generic-usb 0003:046D:C025.0001: input,hidraw0: USB HID v1.10 Mouse [B16_b_02 USB-PS/2 Optical Mouse] on usb-0000:00:1d.0-1/input0 [ 2.244620] usbcore: registered new interface driver usbhid [ 2.244622] usbhid: USB HID core driver [ 3.091083] EXT4-fs (loop0): mounted filesystem with ordered data mode. Opts: (null) [ 3.238275] scsi 6:0:0:0: Direct-Access Generic- Multi-Card 1.00 PQ: 0 ANSI: 0 CCS [ 3.348261] sd 6:0:0:0: Attached scsi generic sg2 type 0 [ 3.351897] sd 6:0:0:0: [sdb] Attached SCSI removable disk [ 47.138012] udevd[334]: starting version 173 [ 47.177678] lp: driver loaded but no devices found [ 47.197084] wmi: Mapper loaded [ 47.197526] acer_wmi: Acer Laptop ACPI-WMI Extras [ 47.210227] acer_wmi: Brightness must be controlled by generic video driver [ 47.566578] Disabling lock debugging due to kernel taint [ 47.584050] ndiswrapper version 1.56 loaded (smp=yes, preempt=no) [ 47.620666] type=1400 audit(1319239895.347:2): apparmor="STATUS" operation="profile_load" name="/sbin/dhclient" pid=624 comm="apparmor_parser" [ 47.620934] type=1400 audit(1319239895.347:3): apparmor="STATUS" operation="profile_load" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=624 comm="apparmor_parser" [ 47.621108] type=1400 audit(1319239895.347:4): apparmor="STATUS" operation="profile_load" name="/usr/lib/connman/scripts/dhclient-script" pid=624 comm="apparmor_parser" [ 47.633056] [drm] Initialized drm 1.1.0 20060810 [ 47.722594] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 47.722602] i915 0000:00:02.0: setting latency timer to 64 [ 47.807152] ndiswrapper (check_nt_hdr:141): kernel is 64-bit, but Windows driver is not 64-bit;bad magic: 010B [ 47.807159] ndiswrapper (load_sys_files:206): couldn't prepare driver 'rt2860' [ 47.807930] ndiswrapper (load_wrap_driver:108): couldn't load driver rt2860; check system log for messages from 'loadndisdriver' [ 47.856250] usbcore: registered new interface driver ndiswrapper [ 47.861772] i915 0000:00:02.0: irq 47 for MSI/MSI-X [ 47.861781] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [ 47.861783] [drm] Driver supports precise vblank timestamp query. [ 47.861842] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 47.980620] fixme: max PWM is zero. [ 48.286153] fbcon: inteldrmfb (fb0) is primary device [ 48.287033] Console: switching to colour frame buffer device 170x48 [ 48.287062] fb0: inteldrmfb frame buffer device [ 48.287064] drm: registered panic notifier [ 48.333883] acpi device:02: registered as cooling_device2 [ 48.334053] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input5 [ 48.334128] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) [ 48.334203] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 [ 48.334644] HDA Intel 0000:00:1b.0: power state changed by ACPI to D0 [ 48.334652] HDA Intel 0000:00:1b.0: power state changed by ACPI to D0 [ 48.334673] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21 [ 48.334737] HDA Intel 0000:00:1b.0: irq 48 for MSI/MSI-X [ 48.334772] HDA Intel 0000:00:1b.0: setting latency timer to 64 [ 48.356107] Adding 261116k swap on /host/ubuntu/disks/swap.disk. Priority:-1 extents:1 across:261116k [ 48.380946] hda_codec: ALC268: BIOS auto-probing. [ 48.390242] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input6 [ 48.390365] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input7 [ 48.490870] EXT4-fs (loop0): re-mounted. Opts: errors=remount-ro,user_xattr [ 48.917990] ppdev: user-space parallel port driver [ 48.950729] type=1400 audit(1319239896.675:5): apparmor="STATUS" operation="profile_load" name="/usr/lib/cups/backend/cups-pdf" pid=941 comm="apparmor_parser" [ 48.951114] type=1400 audit(1319239896.675:6): apparmor="STATUS" operation="profile_load" name="/usr/sbin/cupsd" pid=941 comm="apparmor_parser" [ 48.977706] Synaptics Touchpad, model: 1, fw: 7.2, id: 0x1c0b1, caps: 0xd04733/0xa44000/0xa0000 [ 49.048871] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input8 [ 49.078713] sky2 0000:02:00.0: eth0: enabling interface [ 49.079462] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 50.762266] sky2 0000:02:00.0: eth0: Link is up at 100 Mbps, full duplex, flow control rx [ 50.762702] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 54.751478] type=1400 audit(1319239902.475:7): apparmor="STATUS" operation="profile_load" name="/usr/lib/lightdm/lightdm-guest-session-wrapper" pid=1039 comm="apparmor_parser" [ 54.755907] type=1400 audit(1319239902.479:8): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=1040 comm="apparmor_parser" [ 54.756237] type=1400 audit(1319239902.483:9): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=1040 comm="apparmor_parser" [ 54.756417] type=1400 audit(1319239902.483:10): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=1040 comm="apparmor_parser" [ 54.764825] type=1400 audit(1319239902.491:11): apparmor="STATUS" operation="profile_load" name="/usr/bin/evince" pid=1041 comm="apparmor_parser" [ 54.768365] type=1400 audit(1319239902.495:12): apparmor="STATUS" operation="profile_load" name="/usr/bin/evince-previewer" pid=1041 comm="apparmor_parser" [ 54.770601] type=1400 audit(1319239902.495:13): apparmor="STATUS" operation="profile_load" name="/usr/bin/evince-thumbnailer" pid=1041 comm="apparmor_parser" [ 54.770729] type=1400 audit(1319239902.495:14): apparmor="STATUS" operation="profile_load" name="/usr/share/gdm/guest-session/Xsession" pid=1038 comm="apparmor_parser" [ 54.775181] type=1400 audit(1319239902.499:15): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/mission-control-5" pid=1043 comm="apparmor_parser" [ 54.775533] type=1400 audit(1319239902.499:16): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/telepathy-*" pid=1043 comm="apparmor_parser" [ 54.936691] init: failsafe main process (891) killed by TERM signal [ 54.944583] init: apport pre-start process (1096) terminated with status 1 [ 55.000373] init: apport post-stop process (1160) terminated with status 1 [ 55.005291] init: gdm main process (1159) killed by TERM signal [ 59.782579] EXT4-fs (loop0): re-mounted. Opts: errors=remount-ro,user_xattr,commit=0 [ 60.992021] eth0: no IPv6 routers present [ 61.936072] device eth0 entered promiscuous mode [ 62.053949] Bluetooth: Core ver 2.16 [ 62.054005] NET: Registered protocol family 31 [ 62.054007] Bluetooth: HCI device and connection manager initialized [ 62.054010] Bluetooth: HCI socket layer initialized [ 62.054012] Bluetooth: L2CAP socket layer initialized [ 62.054993] Bluetooth: SCO socket layer initialized [ 62.058750] Bluetooth: RFCOMM TTY layer initialized [ 62.058758] Bluetooth: RFCOMM socket layer initialized [ 62.058760] Bluetooth: RFCOMM ver 1.11 [ 62.059428] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 62.059432] Bluetooth: BNEP filters: protocol multicast [ 62.460389] init: plymouth-stop pre-start process (1662) terminated with status 1 '

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• Upcoming User Group Events in 2011

  - by john.orourke(at)oracle.com

  At a recent customer event, someone asked me if Oracle had any plans to re-create the Hyperion Solutions Conference.  Unfortunately the answer is no.  With so many different product lines it would be challenging and costly for Oracle to run separate user conferences for every product line, and it would create too many events for customers with multiple products to attend.  So Oracle Open World is the company's main event for showcasing what's new and what's coming across all product lines.  If customers find Oracle OpenWorld too overwhelming or if the timing is bad, there are a number of other conferences, which are run by Oracle user groups and include a number of sessions focused on Oracle Hyperion EPM and BI products.  Here's a sneak preview of what's coming up for conferences in 2011 where you can network with other Hyperion users and learn what's new and what's coming in our products. Alliance 2011:  This conference is run by the Oracle Higher Education User Group (HEUG).  It's being held March 27 - 30th in lovely Denver, Colorado.  (a great location and time for skiers!)  This event is targeted at customers in Higher Education and Public Sector organizations and is expecting to draw over 3,500 attendees.  There will be a number of sessions focusing on Oracle Hyperion EPM and BI products in the Budgeting track, as well as the Reporting & BI track.  This includes product-focused sessions delivered by Oracle and partners, as well as case studies delivered by customers.  Here's a link to the registration page where you can get more information: http://www.heug.org/p/cm/ld/fid=255 Collaborate 2011:  This conference is run by three different user groups;  OAUG, IOUG and Quest.  It's being held April 10 - 14th in sunny Orlando, Florida.  (yes, sunshine and warmth!)  This event is targeted to customers with Oracle E-Business Suite, PeopleSoft, JD Edwards, Hyperion, Primavera and other products and is expected to draw over 5,000 attendees.  You'll find a number of sessions focused on Oracle Hyperion EPM and BI products in the BI/Data Warehousing/EPM track.  This includes product-focused sessions delivered by Oracle, our partners, and customers as well as a number of customer case studies.  There will also be an exhibit area with a number of demo pods focused on EPM and BI products.  Here's a link to the conference web site where you can get more information: http://collaborate.oaug.org/ Also, please note that the OAUG has a Hyperion SIG that runs focused EPM/Hyperion events throughout the year.  Here's a link to their web site where you can get more information: http://hyperionsig.oaug.org/ Kscope 2011:  Formerly the Kaleidoscope conference, this one is run by the Oracle Developer Tools User Group (ODTUG).  This conference is being held June 26 - 30th in Long Beach, CA. (surf's up!)  Historically, this event has focused on Oracle Development tools, but over the past few years the EPM and BI content has grown with over 100 sessions planned this year.  So this event is becoming a great venue for existing Hyperion customers to learn about the latest developments with Oracle Essbase, Hyperion Planning, Hyperion Financial Management, Oracle BI and other products.   You'll also find hands-on workshops, product demonstrations as well as EPM and BI Symposiums run by Oracle Development staff.  Here's a link to the web site where you can get more details.  http://www.kscope11.com/biepm UKOUG Conference Series:  EPM and Hyperion 2011:  For Hyperion customers in the UK, the UKOUG has a Hyperion SIG that runs a focused conference for EPM and Hyperion products.  The 2011 event is planned for June in London.  Here's a link to the web site for this event where you can get more information: http://hyperion.ukoug.org/default.asp?p=8461 In addition to these conferences, you can also find Oracle EPM and BI content at regional user group meetings globally as well as Marketing events run by Oracle.  Check the events page at www.oracle.com for the details on upcoming Marketing and regional User Group events.  So while Oracle will not be trying to replicate the Hyperion Solutions conference, the good news is that there are a number of other events available where customers can find out what's new and what's coming with Oracle EPM and BI products.  And these events are running at different times of the year in different locations - so you can pick the event that makes the most sense for your company from a timing and location standpoint. I'll be delivering a number of sessions at the Alliance and Collaborate conferences and hope to see many of our loyal customers and partners at these events.  And there's always Oracle OpenWorld coming up in October, for which the planning has already started.  I look forward to seeing you in 2011.

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• Cumulative Update packages for SQL Server 2008 are available now: CU7 for SQL2008 SP2 and CU2 for SQL2008 SP3

  - by ssqa.net

  Another instalment of Cumulative Update package for SQL Server 2008 SP3 is available now, which is CU2 and the build number is known as 10.00.5768.00. As usual this CU2 for SQL2008 SP3 contains hotfixes for issues that were fixed after the release of SQL Server 2008 Service Pack 3 (SP3). KBA2633143 list the following article numbers about more information on the fixes: VSTS bug number KB article number Description 794387 2522893 (http://support.microsoft.com/kb/2522893/ ) FIX: A backup operation...(read more)

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• Is code that terminates on a random condition guaranteed to terminate?

  - by Simon Campbell

  If I had a code which terminated based on if a random number generator returned a result (as follows), would it be 100% certain that the code would terminate if it was allowed to run forever. while (random(MAX_NUMBER) != 0): // random returns a random number between 0 and MAX_NUMBER print('Hello World') I am also interested in any distinctions between purely random and the deterministic random that computers generally use. Assume the seed is not able to be known in the case of the deterministic random. Naively it could be suggested that the code will exit, after all every number has some possibility and all of time for that possibility to be exercised. On the other hand it could be argued that there is the random chance it may not ever meet the exit condition-- the generator could generate 1 'randomly' until infinity. (I suppose one would question the validity of the random number generator if it was a deterministic generator returning only 1's 'randomly' though)

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• Informing Googlebot for deprecated pages

  - by trante

  I publish timetables in my website. For example last year I published Number 2 bus Summer 2013 timetable. I has pretty good ranking on Google SERPs for number 2 bus timetable But this year I added a new page with the name "Number 2 bus Summer 2014 timetable". When users search number 2 bus timetable in Google, they find 2013 timetable in first page of SERPs. But I want them to find 2014 timetable. Thy can reach 2014 page with the keywords number 2 bus timetable 2014. But most of the users doesn't write year name. So what's the proper way to say Googlebot that 2013 page is deprecated and newer version is 2014 page ? I created a link from 2013 page to 2013 page and added a deprecation alert for visitors. But I still see 2013 timetable in first page of Google SERPs. Of course it is possible to 301 redirect, 2013 page to 2014 page. But I want users to reach old pages to compare the differences between years. (As you would guess I have many pages like this.) Edit: Why I don't put timetables on same page and show different years' timetables with sorting. Because my old pages has good pagerank scores or SERPs. Removing these old page will remove them.

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• How to use Object Type Converter

  - by arun.x.sridharan(at)oracle.com

  UseCase Description A person form where in user will enter String which has to be converted to Number while persisting. From the User Interface we might be getting a String value which has to be persisted in the database as a number in that scenario we can use converters to map the java object which is of type String to its database value which is a Number. For example , there is a 'Person' table in database which is used to store the user details passed from the User Interface. It has a 'Status' column which is of the value  Number. But from the User Interface String values (Active/InActive) are passed . For persisting the user details we can use Object type converter and provide the mappings for status column corresponding to the String values. Object type converter can be used if you wanted to have a mapping for a field for example when departmentName on the entity was of String value and mapped to dept_name field on the database table which is of the value NUMBER.   Implementation steps Sample EJB API for setting the value of status on Person Entity as a String     public void createPerson(String status,String firstName,String lastName) {                Person person = new Person();                // status will be set as a String value received from the User Interface         person.setStatus(status);                person.setFirstname(firstName);        person.setLastname(lastName);                persistPerson(person);         } In the sample code shown above status is passed as a String, this has to be converted to Number. The String value obtained will be set on Person object and persistPerson API will be called for creating a new person from the values passed from the User Interface.  Steps to configure Object type converter: 1. Navigate to Person Entity from persistence.xml and navigate to status field2. Click on Conversion tab and select Converted check box3. Select Object Type Converter radio button and set the Data Type Class to      java.math.BigDecimal and Object Type Class to java.lang.String4. Specify the conversion values for all the values that can be passed from the user interface  as shown below5. Set the Default Object value

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• Understanding binary numbers in terms of real world objects

  - by Kaushik

  When I represent a number in the decimal system, I have an intuitive knowledge of what it amounts to. For example take the number '10': I understand that it means 10 apples or 10 people... i.e I can count in the real world. But as soon as the number is converted to any other system, this understanding no longer applies. For example 10 when converted to binary will be 1010...now what does this represent? Is there a way to understand this number 1010 in terms of counting objects in the real world?

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• Unity GUI not in build, but works fine in editor

  - by Darren

  I have: GUITexture attached to an object A script that has GUIStyles created for the Textfield and Buttons that are created in OnGUI(). This script is attached to the same object in number 1 3 GUIText objects each separate from the above. A script that enables the GUITexture and the script in number 1 and 2 respectively This is how it is supposed to work: When I cross the finish line, number 4 script enables number 1 GUITexture component and number 2 script component. The script component uses one of number 3's GUIText objects to show you your best lap time, and also makes a GUI.Textfield for name entry and 2 GUI.Buttons for "Submit" and "Skip". If you hit "Submit" the script will submit the time. No matter which button you press, The remaining 2 GUIText objects from number 3 will show you the top 10 best times. For some reason, when I run it in editor, everything works 100%, but when I'm in different kinds of builds, the results vary. When I am in a webplayer, The GUITexture and the textfield and buttons appear, but the textfield and buttons are plain and have no evidence of GUIStyles. When I click one of the buttons, the score gets submitted but I do not get the fastest times showing. When I am in a standalone build, the GUITexture shows up, but nothing else does. If I remove the GUIStyle parameter of the GUI.Textfield and GUI.Button, they show up. Why am I getting these variations and how can I fix it? Code below: void Start () { Names.text = ""; Times.text = ""; YourBestTime.text = "Your Best Lap: " + bestTime + "\nEnter your name:"; //StartCoroutine(GetTimes("Test")); } void Update() { if (!ShowButtons && !GettingTimes) { StartCoroutine(GetTimes()); GettingTimes = true; } } IEnumerator GetTimes () { Debug.Log("Getting times"); YourBestTime.text = "Loading Best Lap Times"; WWW times_get = new WWW(GetTimesUrl); yield return times_get; WWW names_get = new WWW(GetNamesUrl); yield return names_get; if(times_get.error != null || names_get.error != null) { print("There was an error retrieiving the data: " + names_get.error + times_get.error); } else { Times.text = times_get.text; Names.text = names_get.text; YourBestTime.text = "Your Best Lap: " + bestTime; } } IEnumerator PostLapTime (string Name, string LapTime) { string hash= MD5.Md5Sum(Name + LapTime + secretKey); string bestTime_url = SubmitTimeUrl + "&Name=" + WWW.EscapeURL(Name) + "&LapTime=" + LapTime + "&hash=" + hash; Debug.Log (bestTime_url); // Post the URL to the site and create a download object to get the result. WWW hs_post = new WWW(bestTime_url); //label = "Submitting..."; yield return hs_post; // Wait until the download is done if (hs_post.error != null) { print("There was an error posting the lap time: " + hs_post.error); //label = "Error: " + hs_post.error; //show = false; } else { Debug.Log("Posted: " + hs_post.text); ShowButtons = false; PostingTime = false; } } void OnGUI() { if (ShowButtons) { //makes text box nameString = GUI.TextField( new Rect((Screen.width/2)-111, (Screen.height/2)-130, 222, 25), nameString, 20, TextboxStyle); if (GUI.Button( new Rect( (Screen.width/2-74.0f), (Screen.height/2)- 90, 64, 32), "Submit", ButtonStyle)) { //SUBMIT TIME if (nameString == "") { nameString = "Player"; } if (!PostingTime) { StartCoroutine(PostLapTime(nameString, bestTime)); PostingTime = true; } } else if (GUI.Button( new Rect( (Screen.width/2+10.0f), (Screen.height/2)- 90, 64, 32), "Skip", ButtonStyle)) { ShowButtons = false; } } } }

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• Do Google's feed statistics include former users?

  - by jjackson

  I'm currently not using any sort of fancy stat tracking software such as feedburner, but I occasionally look at Google's stats in their Webmaster Tools just to get a rough idea of whether the number of subscribers is going up or down. This only gives the number of users subscribed through Google products, as they explain in their help documents: Subscriber stats display the number of Google users who have subscribed to your feeds using any Google product (such as Reader, iGoogle, or Orkut). Because users can subscribe to feeds using many different aggregators or RSS readers, the actual number of subscribers to your site may be higher. I used to use Google Reader very regularly but haven't opened it in a while now. The way I understand it, this will mean that even though I haven't touched any of those feeds in a long time I'm still technically subscribed to them and will therefore be included in Google's statistic. Is this correct? Also since Google runs Feedburner, does this have any effect on their stats as well?

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• Developing Schema Compare for Oracle (Part 2): Dependencies

  - by Simon Cooper

  In developing Schema Compare for Oracle, one of the issues we came across was the size of the databases. As detailed in my last blog post, we had to allow schema pre-filtering due to the number of objects in a standard Oracle database. Unfortunately, this leads to some quite tricky situations regarding object dependencies. This post explains how we deal with these dependencies. 1. Cross-schema dependencies Say, in the following database, you're populating SchemaA, and synchronizing SchemaA.Table1: SOURCE   TARGET CREATE TABLE SchemaA.Table1 ( Col1 NUMBER REFERENCES SchemaB.Table1(Col1));   CREATE TABLE SchemaA.Table1 ( Col1 VARCHAR2(100) REFERENCES SchemaB.Table1(Col1)); CREATE TABLE SchemaB.Table1 ( Col1 NUMBER PRIMARY KEY);   CREATE TABLE SchemaB.Table1 ( Col1 VARCHAR2(100) PRIMARY KEY); We need to do a rebuild of SchemaA.Table1 to change Col1 from a VARCHAR2(100) to a NUMBER. This consists of: Creating a table with the new schema Inserting data from the old table to the new table, with appropriate conversion functions (in this case, TO_NUMBER) Dropping the old table Rename new table to same name as old table Unfortunately, in this situation, the rebuild will fail at step 1, as we're trying to create a NUMBER column with a foreign key reference to a VARCHAR2(100) column. As we're only populating SchemaA, the naive implementation of the object population prefiltering (sticking a WHERE owner = 'SCHEMAA' on all the data dictionary queries) will generate an incorrect sync script. What we actually have to do is: Drop foreign key constraint on SchemaA.Table1 Rebuild SchemaB.Table1 Rebuild SchemaA.Table1, adding the foreign key constraint to the new table This means that in order to generate a correct synchronization script for SchemaA.Table1 we have to know what SchemaB.Table1 is, and that it also needs to be rebuilt to successfully rebuild SchemaA.Table1. SchemaB isn't the schema that the user wants to synchronize, but we still have to load the table and column information for SchemaB.Table1 the same way as any table in SchemaA. Fortunately, Oracle provides (mostly) complete dependency information in the dictionary views. Before we actually read the information on all the tables and columns in the database, we can get dependency information on all the objects that are either pointed at by objects in the schemas we’re populating, or point to objects in the schemas we’re populating (think about what would happen if SchemaB was being explicitly populated instead), with a suitable query on all_constraints (for foreign key relationships) and all_dependencies (for most other types of dependencies eg a function using another function). The extra objects found can then be included in the actual object population, and the sync wizard then has enough information to figure out the right thing to do when we get to actually synchronize the objects. Unfortunately, this isn’t enough. 2. Dependency chains The solution above will only get the immediate dependencies of objects in populated schemas. What if there’s a chain of dependencies? A.tbl1 -> B.tbl1 -> C.tbl1 -> D.tbl1 If we’re only populating SchemaA, the implementation above will only include B.tbl1 in the dependent objects list, whereas we might need to know about C.tbl1 and D.tbl1 as well, in order to ensure a modification on A.tbl1 can succeed. What we actually need is a graph traversal on the dependency graph that all_dependencies represents. Fortunately, we don’t have to read all the database dependency information from the server and run the graph traversal on the client computer, as Oracle provides a method of doing this in SQL – CONNECT BY. So, we can put all the dependencies we want to include together in big bag with UNION ALL, then run a SELECT ... CONNECT BY on it, starting with objects in the schema we’re populating. We should end up with all the objects that might be affected by modifications in the initial schema we’re populating. Good solution? Well, no. For one thing, it’s sloooooow. all_dependencies, on my test databases, has got over 110,000 rows in it, and the entire query, for which Oracle was creating a temporary table to hold the big bag of graph edges, was often taking upwards of two minutes. This is too long, and would only get worse for large databases. But it had some more fundamental problems than just performance. 3. Comparison dependencies Consider the following schema: SOURCE   TARGET CREATE TABLE SchemaA.Table1 ( Col1 NUMBER REFERENCES SchemaB.Table1(col1));   CREATE TABLE SchemaA.Table1 ( Col1 VARCHAR2(100)); CREATE TABLE SchemaB.Table1 ( Col1 NUMBER PRIMARY KEY);   CREATE TABLE SchemaB.Table1 ( Col1 VARCHAR2(100)); What will happen if we used the dependency algorithm above on the source & target database? Well, SchemaA.Table1 has a foreign key reference to SchemaB.Table1, so that will be included in the source database population. On the target, SchemaA.Table1 has no such reference. Therefore SchemaB.Table1 will not be included in the target database population. In the resulting comparison of the two objects models, what you will end up with is: SOURCE  TARGET SchemaA.Table1 -> SchemaA.Table1 SchemaB.Table1 -> (no object exists) When this comparison is synchronized, we will see that SchemaB.Table1 does not exist, so we will try the following sequence of actions: Create SchemaB.Table1 Rebuild SchemaA.Table1, with foreign key to SchemaB.Table1 Oops. Because the dependencies are only followed within a single database, we’ve tried to create an object that already exists. To fix this we can include any objects found as dependencies in the source or target databases in the object population of both databases. SchemaB.Table1 will then be included in the target database population, and we won’t try and create objects that already exist. All good? Well, consider the following schema (again, only explicitly populating SchemaA, and synchronizing SchemaA.Table1): SOURCE   TARGET CREATE TABLE SchemaA.Table1 ( Col1 NUMBER REFERENCES SchemaB.Table1(col1));   CREATE TABLE SchemaA.Table1 ( Col1 VARCHAR2(100)); CREATE TABLE SchemaB.Table1 ( Col1 NUMBER PRIMARY KEY);   CREATE TABLE SchemaB.Table1 ( Col1 VARCHAR2(100) PRIMARY KEY); CREATE TABLE SchemaC.Table1 ( Col1 NUMBER);   CREATE TABLE SchemaC.Table1 ( Col1 VARCHAR2(100) REFERENCES SchemaB.Table1); Although we’re now including SchemaB.Table1 on both sides of the comparison, there’s a third table (SchemaC.Table1) that we don’t know about that will cause the rebuild of SchemaB.Table1 to fail if we try and synchronize SchemaA.Table1. That’s because we’re only running the dependency query on the schemas we’re explicitly populating; to solve this issue, we would have to run the dependency query again, but this time starting the graph traversal from the objects found in the other database. Furthermore, this dependency chain could be arbitrarily extended.This leads us to the following algorithm for finding all the dependencies of a comparison: Find initial dependencies of schemas the user has selected to compare on the source and target Include these objects in both the source and target object populations Run the dependency query on the source, starting with the objects found as dependents on the target, and vice versa Repeat 2 & 3 until no more objects are found For the schema above, this will result in the following sequence of actions: Find initial dependenciesSchemaA.Table1 -> SchemaB.Table1 found on sourceNo objects found on target Include objects in both source and targetSchemaB.Table1 included in source and target Run dependency query, starting with found objectsNo objects to start with on sourceSchemaB.Table1 -> SchemaC.Table1 found on target Include objects in both source and targetSchemaC.Table1 included in source and target Run dependency query on found objectsNo objects found in sourceNo objects to start with in target Stop This will ensure that we include all the necessary objects to make any synchronization work. However, there is still the issue of query performance; the CONNECT BY on the entire database dependency graph is still too slow. After much sitting down and drawing complicated diagrams, we decided to move the graph traversal algorithm from the server onto the client (which turned out to run much faster on the client than on the server); and to ensure we don’t read the entire dependency graph onto the client we also pull the graph across in bits – we start off with dependency edges involving schemas selected for explicit population, and whenever the graph traversal comes across a dependency reference to a schema we don’t yet know about a thunk is hit that pulls in the dependency information for that schema from the database. We continue passing more dependent objects back and forth between the source and target until no more dependency references are found. This gives us the list of all the extra objects to populate in the source and target, and object population can then proceed. 4. Object blacklists and fast dependencies When we tested this solution, we were puzzled in that in some of our databases most of the system schemas (WMSYS, ORDSYS, EXFSYS, XDB, etc) were being pulled in, and this was increasing the database registration and comparison time quite significantly. After debugging, we discovered that the culprits were database tables that used one of the Oracle PL/SQL types (eg the SDO_GEOMETRY spatial type). These were creating a dependency chain from the database tables we were populating to the system schemas, and hence pulling in most of the system objects in that schema. To solve this we introduced blacklists of objects we wouldn’t follow any dependency chain through. As well as the Oracle-supplied PL/SQL types (MDSYS.SDO_GEOMETRY, ORDSYS.SI_COLOR, among others) we also decided to blacklist the entire PUBLIC and SYS schemas, as any references to those would likely lead to a blow up in the dependency graph that would massively increase the database registration time, and could result in the client running out of memory. Even with these improvements, each dependency query was taking upwards of a minute. We discovered from Oracle execution plans that there were some columns, with dependency information we required, that were querying system tables with no indexes on them! To cut a long story short, running the following query: SELECT * FROM all_tab_cols WHERE data_type_owner = ‘XDB’; results in a full table scan of the SYS.COL$ system table! This single clause was responsible for over half the execution time of the dependency query. Hence, the ‘Ignore slow dependencies’ option was born – not querying this and a couple of similar clauses to drastically speed up the dependency query execution time, at the expense of producing incorrect sync scripts in rare edge cases. Needless to say, along with the sync script action ordering, the dependency code in the database registration is one of the most complicated and most rewritten parts of the Schema Compare for Oracle engine. The beta of Schema Compare for Oracle is out now; if you find a bug in it, please do tell us so we can get it fixed!

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• Truly Random Numbers

  German researchers use a "flip-flop" to improve random number generator Random number generation - Algorithms - Pseudorandom Numbers - Math - Recreation

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• CodePlex Daily Summary for Thursday, September 20, 2012

  CodePlex Daily Summary for Thursday, September 20, 2012Popular ReleasesSiteMap Editor for Microsoft Dynamics CRM 2011: SiteMap Editor (1.1.2020.421): New features: Disable a specific part of SiteMap to keep the data without displaying them in the CRM application. It simply comments XML part of the sitemap (thanks to rboyers for this feature request) Right click an item and click on "Disable" to disable it Items disabled are greyed and a suffix "- disabled" is added Right click an item and click on "Enable" to enable it Refresh list of web resources in the web resources pickerWPF Animated GIF: WPF Animated GIF 1.2.1: Bug fixes 1275: fixed rendering issues when DisposalMethod = 2 or 3AJAX Control Toolkit: September 2012 Release: AJAX Control Toolkit Release Notes - September 2012 Release Version 60919September 2012 release of the AJAX Control Toolkit. AJAX Control Toolkit .NET 4.5 – AJAX Control Toolkit for .NET 4.5 and sample site (Recommended). AJAX Control Toolkit .NET 4 – AJAX Control Toolkit for .NET 4 and sample site (Recommended). AJAX Control Toolkit .NET 3.5 – AJAX Control Toolkit for .NET 3.5 and sample site (Recommended). Notes: - The current version of the AJAX Control Toolkit is not compatible with ...Lib.Web.Mvc & Yet another developer blog: Lib.Web.Mvc 6.1.0: Lib.Web.Mvc is a library which contains some helper classes for ASP.NET MVC such as strongly typed jqGrid helper, XSL transformation HtmlHelper/ActionResult, FileResult with range request support, custom attributes and more. Release contains: Lib.Web.Mvc.dll with xml documentation file Standalone documentation in chm file and change log Library source code Sample application for strongly typed jqGrid helper is available here. Sample application for XSL transformation HtmlHelper/ActionRe...Sense/Net CMS - Enterprise Content Management: SenseNet 6.1.2 Community Edition: Sense/Net 6.1.2 Community EditionMain new featuresOur current release brings a lot of bugfixes, including the resolution of js/css editing cache issues, xlsx file handling from Office, expense claim demo workspace fixes and much more. Besides fixes 6.1.2 introduces workflow start options and other minor features like a reusable Reject client button for approval scenarios and resource editor enhancements. We have also fixed an issue with our install package to bring you a flawless installation...WinRT XAML Toolkit: WinRT XAML Toolkit - 1.2.3: WinRT XAML Toolkit based on the Windows 8 RTM SDK. Download the latest source from the SOURCE CODE page. For compiled version use NuGet. You can add it to your project in Visual Studio by going to View/Other Windows/Package Manager Console and entering: PM> Install-Package winrtxamltoolkit Features AsyncUI extensions Controls and control extensions Converters Debugging helpers Imaging IO helpers VisualTree helpers Samples Recent changes NOTE: Namespace changes DebugConsol...Python Tools for Visual Studio: 1.5 RC: PTVS 1.5RC Available! We’re pleased to announce the release of Python Tools for Visual Studio 1.5 RC. Python Tools for Visual Studio (PTVS) is an open-source plug-in for Visual Studio which supports programming with the Python language. PTVS supports a broad range of features including CPython/IronPython, Edit/Intellisense/Debug/Profile, Cloud, HPC, IPython, etc. support. The primary new feature for the 1.5 release is Django including Azure support! The http://www.djangoproject.com is a pop...Launchbar: Lanchbar 4.0.0: First public release.AssaultCube Reloaded: 2.5.4 -: Linux has Ubuntu 11.10 32-bit precompiled binaries and Ubuntu 10.10 64-bit precompiled binaries, but you can compile your own as it also contains the source. If you are using Mac or other operating systems, please wait while we try to package for those OSes. Try to compile it. If it fails, download a virtual machine. The server pack is ready for both Windows and Linux, but you might need to compile your own for Linux (source included) Changelog: New logo Improved airstrike! Reset nukes...Extended WPF Toolkit: Extended WPF Toolkit - 1.7.0: Want an easier way to install the Extended WPF Toolkit?The Extended WPF Toolkit is available on Nuget. What's new in the 1.7.0 Release?New controls Zoombox Pie New features / bug fixes PropertyGrid.ShowTitle property added to allow showing/hiding the PropertyGrid title. Modifications to the PropertyGrid.EditorDefinitions collection will now automatically be applied to the PropertyGrid. Modifications to the PropertyGrid.PropertyDefinitions collection will now be reflected automaticaly...JayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.2: JayData is a unified data access library for JavaScript to CRUD + Query data from different sources like OData, MongoDB, WebSQL, SqLite, Facebook or YQL. The library can be integrated with Knockout.js or Sencha Touch 2 and can be used on Node.js as well. See it in action in this 6 minutes video Sencha Touch 2 example app using JayData: Netflix browser. What's new in JayData 1.2 For detailed release notes check the release notes. JayData core: all async operations now support promises JayDa...????????API for .Net SDK: SDK for .Net ??? Release 4: 2012?9?17??? ?????，???????????????。 ?????Release 3??????，???????，???，??? ??????????????????SDK，????????。 ??，??????? That's all.VidCoder: 1.4.0 Beta: First Beta release! Catches up to HandBrake nightlies with SVN 4937. Added PGS (Blu-ray) subtitle support. Additional framerates available: 30, 50, 59.94, 60 Additional sample rates available: 8, 11.025, 12 and 16 kHz Additional higher bitrates available for audio. Same as Source Constant Framerate available. Added Apple TV 3 preset. Added new Bob deinterlacing option. Introduced process isolation for encodes. Now if HandBrake crashes, VidCoder will keep running and continue pro...DNN Metro7 style Skin package: Metro7 style Skin for DotNetNuke 06.02.01: Stabilization release fixed this issues: Links not worked on FF, Chrome and Safari Modified packaging with own manifest file for install and source package. Moved the user Image on the Login to the left side. Moved h2 font-size to 24px. Note : This release Comes w/o source package about we still work an a solution. Who Needs the Visual Studio source files please go to source and download it from there. Known 16 CSS issues that related to the skin.css. All others are DNN default o...Visual Studio Icon Patcher: Version 1.5.1: This fixes a bug in the 1.5 release where it would crash when no language packs were installed for VS2010.VFPX: Desktop Alerts 1.0.2: This update for the Desktop Alerts contains changes to behavior for setting custom sounds for alerts. I have removed ALERTWAV.TXT from the project, and also removed DA_DEFAULTSOUND from the VFPALERT.H file. The AlertManager class and Alert class both have a "default" cSound of ADDBS(JUSTPATH(_VFP.ServerName))+"alert.wav" --- so, as long as you distribute a sound file with the file name "alert.wav" along with the EXE, that file will be used. You can set your own sound file globally by setti...MCEBuddy 2.x: MCEBuddy 2.2.15: Changelog for 2.2.15 (32bit and 64bit) 1. Added support for %originalfilepath% to get the source file full path. Used for custom commands only. 2. Added support for better parsing of Media Portal XML files to extract ShowName and Episode Name and download additional details from TVDB (like Season No, Episode No etc). 3. Added support for TVDB seriesID in metadata 4. Added support for eMail non blocking UI testEmmaClient - Liveresults for Orienteering: EmmaClient 2012-09-13: Minor release with a small fix for producing OS2012 results (and status of runners in the forest)Multiple Image choice custom field type: MultipleImageUpload V1.0: This is the Custom field type which allows the users to choose image as a choice field. This custom field type is SharePoint 2010, install the WSP thru powershell or Stsadm tool and enjoy the functionality...MDS Administration: Version 1.1.3: Fixed Rename issueNew Projects3dxia: bug3dxiaBitbucket Issue Tracker: A simple issue-tracking Windows client for your projects hosted on bitbucket.org.C++ thread-safe logging: Visual Studio C++ log library project: add to your project for thread-safe logging capabilities.Caddies GeoNote: The work started from making a vision for a neighbourhood communication platform, and ended up in creating the version 1.0 of a mobile application – GeoNotes – CodePlexGitHookForAzure: TestCommerce Server Pipeline Log Analyzer: This tool read and analyze pipeline logs under one selected folder. It applies to Microsoft Commerce Server 2002, 2007, 2009 and 2009 R2 Pipeline logs.Contrib.Mod.ResetPassword: Send reset link as a shapeContrib.Taxonomies.ViewExtension: Orchard module that adds a filter box to the taxonomies selector.EasierRdp: This is a remote desktop session management tool which provides an easy way to maintain multiple users and servers' connectionEconomic news grabber: WCF service for get news from rss, news sites and etc. WPF client for presentation this data for end users.Eticaret Sitesi: eee ticFacebook Graph API SDK Helper Class Library: Facebook C# Graph API SDK Helper Class Under developmentfxch01v14: helloKarned 2: Karned est un carnet de pêche informatique. Ce logiciel permet de noter vos prises de pêche à des fins d'analyse, ou simplement pour le souvenir...lixotrash: SandBox and POCs collections, not interesting hereLoggerLib: The project is a "Tracing Library" developed in a Borland C++ enviroment. Il progetto consiste in una libreria di tracciamento, sviluppata in ambiente Borland.LyncTalker: A simple tray application which will speak incoming Lync instant messages.MicroFrameWork: MicroFrameWorkNuzzle: 2.6.5 Dofus EmulatorPDF Merge: PDF Merge is a simple user-friendly application that allows you to merge multiple PDF documents including scanned / imported documents and images into 1 PDF.Pipeline: A library of several lightweight pipeline implementations ("pipes and filters" pattern).Prime Calculator: PrimeCalculator factorizes a number or a math expression into its prime factors or if prime display its prime type [Unit, Prime, Additive, Pure].Racing: not ready yetRuntime DataSet/DataTable viewer: This component basically allows you to inspect the contents of any Data Set or a Data Table at runtime without breaking into the debugger again and again.Service billing: Student group work for the College of West Anglia UCWA. Snake!: A Snake game written in C#SoccerBot: this is just a test projectSQL Server Trace File Import Utility: Command-line utility to import trace files into a data warehouse type structure. Currently it only handles Login events.testscenairo7onv14: helloToQueryString: Serialize any object in C# to a query string with the .ToQueryString() extension method. Supports primitives, strings, arrays and collections.tyajz: tyajz projectWindows Azure Table Storage: you can find all the details in my blog: hhaggan.wordpress.com and if you do have any question or inquiries feel free to contact me at hhaggan@hotmail.comwtcms: wtcms

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• How to sync audio files with Logitech media server in MAC OS?

  - by Abhishek

  I want to customize the Logitech Media Server (web interface on localhost) so that N number of DIFFERENT audio files will start to play at the same time on N number of wifi receivers, each file on a different receiver. Currently, the server will sync only 1 track to N number(amount) of receivers. Is it possible with Logitech media server is open source. How can I able to do this? can you explain me sample code?

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• Attaining credit card data

  - by Adam

  I've read the many posts on this site that say we are not allowed to store cc numbers if we are not pci-compliant. But, I'm wondering if it is possible to send a CC number through a form to an email address? Would that be still infringing on the standards? The reason I ask is that a local business owner wants to retrieve a number through a form on his website, so he can manually enter the cc info on his end. I'm assuming the only way to properly get a credit card number is to setup a merchant account? What's the best way to get a cc number without calling the actual customer? I'm thinking email is a bad idea as well.

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• Demantra 7.3.1.3 Controlling MDP_MATRIX Combinations Assigned to Forecasting Tasks Using TargetTaskSize

  - by user702295

  New 7.3.1.3 parameter: TargetTaskSize Old parameter: BranchID  Multiple, deprecated  7.3.1.3 onwards Parameter Location: Parameters > System Parameters > Engine > Proport   Default: 0   Engine Mode: Both   Details: Specifies how many MDP_MATRIX combinations the analytical engine attempts to assign to each forecasting task.  Allocation will be affected by forecsat tree branch size.  TaskTargetSize is automcatically calculated.  It holds the perferred branch size, in number of combinations in the lowest level. This parameter is adjusted to a lower value for smaller schemas, depending on the number of available engines.   - As the forecast is generated the engine goes up the tree using max_fore_level and not top_level -1.  Max_fore_level has     to be less than or equal to top_level -1.  Due to this requirement, combinations falling under the same top level -1     member must be in the same task.  A member of the top level -1 of the forecast tree is known as a branch.  An engine     task is therefore comprised of one or more branches.     - Reveal current task size       go to Engine Administrator --> View --> Branch Information and run the application on your Demantra schema.  This will be deprecated in 7.3.1.3 since there is no longer a means of adjusting the brach size directly.  The focus is now on proper hierarchy / forecast design.     - Control of tasks       The number of tasks created is the lowest of number of branches, as defined by top level -1 members in forecast       tree, and engine sessions and the value of TargetTaskSize.  You are used to using the branch multiplier in this       calculation.  As of 7.3.1.3, the branch ID multiple is deprecated.     - Discovery of current branch size       To resolve this you must review the 2nd highest level in the forecast tree (below highest/highest) as this is the       level which determines the size of the branches.  If a few resulting tasks are too large it is recommended that       the forecast tree level driving branches be revised or at times completely removed from the forecast tree.     - Control of foreacast tree branch size         - Run the following sql to determine how even the branches are being split by the engine:             select count(*),branch_id from mdp_matrix where prediction_status = 1 and do_fore = 1 group by branch_id;             This will give you an understanding if some of the individual branches have an unusually large number of           rows and thus might indicate that the engine is not efficiently dividing up the parallel tasks.         - Based on the results of this sql, we may want to adjust the branch id multiplier and/or the number of engines           (both of these settings are found in the Engine Administrator)           select count(*), level_id from mdp_matrix where prediction_status = 1 and do_fore = 1 group by level_id;           This will give us an understanding at which level of the Forecast tree where the forecast is being generated.            Having a majority of combinations higher on the forecast tree might indicate either a poorly designed forecast           tree and/or engine parameters that are too strict           Based on the results of this we would adjust the Forecast Tree to see if choosing a different hierarchy might           produce a forecast, with more combinations, at a lower level.           For example:             - Review the 2nd highest level in the forecast tree, below highest/highest, as this is the level which               determines the size of the branches.             - If a few resulting tasks are too large it is recommended that the forecast tree level driving branches               be revised or at times completely removed from the forecast tree.               - For example, if the highest level of the forecast tree is set to Brand/All Locations.             - You have 10 brands but 2 of the brands account for 67% and 29% of all combinations.             - There is a distinct possibility that the tasks resulting from these 2 branches will be too large for               a single engine to process.  Some possible solutions could be to remove the Brand level and instead               use a different product grouping which has a more even distribution, possibly Product Group.               - It is also possible to add a location dimension to this forecast tree level, for example Customer.                This will also reduce forecast tree branch size and will deliver a balanced task allocation.             - A correctly configured Forecast Tree is something that is done by the Implementation team and is               not the responsibility of Oracle Support.  Allocation will be affected by forecast tree branch size.  When TargetTaskSize is set to 0, the default value, the system automatically calculates a value for 'TargetTaskSize' depending on the number of engines.   - QUESTION:  Does this mean that if TargetTaskSize is 1, we use tree branch size to allocate branches to tasks instead                of automatically calculating the size?     ANSWER: DEV Strongly recommends that the setting of TargetTaskSize remain at the DEFAULT of ZERO (0).   - How to control the number of engines?     Determine how many CPUs are on the machine(s) that is (are) running the engine.  As mentioned earlier, the general     rule is that you should designate 2 engines per each CPU that is available.  So for example, if you are running the     engine on a machine that has 4 CPU then you can have up to 8 engines designated in the Engine Administrator.  In this     type of architecture then instead of having one 'localhost' in your Engine Settings Screen, you would have 'localhost'     repeated eight times in this field.     Where do I set the number of engines?                 To add multiples computers where engine will run, please do a back-up of Settings.xml file under         Analytical Engines\bin\ folder, then edit it and add there the selected machines.                 Example, this will allow 3 engines to start:         - <Entry>           <Key argument="ComputerNames" />           <Value type="string" argument="localhost,localhost,localhost" />           </Entry Otherwise, if there are no additional engines defined, the calculated value of 'TargetTaskSize' is used. (Oracle does not recommend changing the default value.) The TargetTaskSize holds the engines prefered branch size, in number of level 1 combinations.   - Level 1 combinations, known as group size The engine manager will use this parameter to attempt creating branches with similar size.   * The engine manager will not create engines that do not have a branch. The engine divider algorithm uses the value of 'TargetTaskSize' as a system-preferred branch size to create branches that are more equal in size which improves engine performance.  The engine divider will try to add as many tasks as possible to an existing branch, up to the limit of 'TargetTaskSize' level 1 combinations, before adding new branches. Coming up next: - The engine divider - Group size - Level 1 combinations - MAX_FORE_LEVEL - Engine Parameters  

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• Music Rhythm Game Difficulty Question

  - by David Dimalanta

  I have curious question about music rhythm based genre while I'm making a code for the game. Is it really better if I set a random pattern encountered on every music played or there is a specific pattern depending on the music and the difficulty? I have observed the Guitar Hero 3 game for the game console where the difficulty is set on the number of strings used and possible number of combo (e.g. two-string combo). Compared to the Tap Tap Revenge for the Android and iPhone, the difficulty based on the number of BPM (Beat per Minute), meaning, number of targets spawn and must be hit.

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• Displaying Row Numbers in a DataGrid

  Create a running number column that shows the row number in a DataGrid control.

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• Deterministic Multiplayer RTS game questions?

  - by Martin K

  I am working on a cross-platform multiplayer RTS game where the different clients and a server(flash and C#), all need to stay deterministically synchronised. To deal with Floatpoint inconsistencies, I've come across this method: http://joshblog.net/2007/01/30/flash-floating-point-number-errors/#comment-49912 which basically truncates off the nondeterministic part: return Math.round(1000 * float) / 1000; Howewer my concern is that every time there is a division, there is further chance of creating additional floatpoint errors, in essence making it worse? . So it occured to me, how about something like this: function floatSafe(number:Number) : Number {return Math.round(float* 1024) / 1024; } ie dividing with only powers of 2 ? What do you think? . Ironically with the above method I got less accurate results: trace( floatSafe(3/5) ) // 0.599609375 where as with the other method(dividing with 1000), or just tracing the raw value I am getting 3/5 = 0.6 or Maybe thats what 3/5 actually is, IE 0.6 cannot really be represented with a floatpoint datatype, and would be more consistent across different platforms?

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• TSQL Challenge 47 - Read the modification history and identify the fir

  A table contains the list of modifications made to each card. Your job is to write a query that shows the first number, current number (most recent) and the number of changes made. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• Finding Missing UDP Frames Using Wireshark + Custom Dissector (for CQS)

  - by John Dibling

  How do you use Wireshark to identify missing UDP frames? I have written a custom dissector for the CQS feed (reference page). One of our servers gaps when receiving this feed. According to Wireshark, some UDP frames are never received. I know that the frames were sent because all of our other servers are gap-free. A CQS frame consists of multiple messages, each having its own sequence number. My custom dissector provides the following data to Wireshark: cqs.frame_gaps - the number of gaps within a UDP frame (always zero) cqs.frame_first_seq - the first sequence number in a UDP frame cqs.frame_expected_seq - the first sequence number expected in the next UDP frame cqs.frame_msg_count - the number of messages in this UDP frame And I am displaying each of these values in custom columns, as shown in this screenshot: A typical CQS log will consist of millions of rows, so I can't just eyeball it. Is there any way I can get Wireshark to tell me which frames are missing?

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• Oracle SOA Suite for healthcare integration Dashboard

  - by Nitesh Jain

  Oracle SOA Suite Healthcare came up with a new way of monitoring where user can configure a dashboard and follow the dynamic runtime changes.Oracle SOA Suite for healthcare integration dashboards display information about the current health of the endpoints in a healthcare integration application. You can create and configure multiple dashboards as needed to monitor the status and volume metrics for the endpoints you have defined. The Dashboards reflects changes that occur in the runtime repository, such as purging runtime instance data, new messages processed, and new error messages. You can display data for various time periods, and you can manually refresh the data in real time or set the dashboard to automatically refresh at set intervals.Dashboard shows the following information: Status: The current status of the endpoint, such as Running, Idle, Disabled, or Errors. Messages Sent: The number of messages sent by the endpoint in the specified time period. Messages Received: The number of messages received by the endpoint in the specified time period. Errors: The number of messages with errors for the endpoint in the given time period. Last Sent: The date and time the last message was sent from the endpoint. Last Received: The date and time the last message was received from the endpoint. Last Error: The date and time of the last error for the endpoint.  It also shows the detailed view of a specific Endpoint The document type. The number of messages received per second. The total number of message processed in the specified time period. The average size of each message.

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• Getting the right results with bcp and DTS with multiple versions of SQL Server installed.

  - by fatherjack

  I was using SSIS for the first time on an instance the other day and came across this error when I executed a package Package migration from version 3 to version 2 failed with error 0xC001700A. The version number in the package is not valid. The version number cannot be greater than current version number. This was a pain and wasn't something that I was expecting, however, the error message made sense - the package was being executed by the wrong version of the executable. Not impossible to...(read more)

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• MatheMagics - Guess My Age Method 1

  - by PointsToShare

  © 2011 By: Dov Trietsch. All rights reserved MatheMagic – Guess My Age – Method 1 The Mathemagician stands on the stage and asks an adult to do the following: ·         Do the next few steps on your calculator, or the calculator in your phone, or even on a piece of paper. ·         Do it silently! Don’t tell me the results until I ask for them directly ·         Compute a single digit multiple of 9 – any one of 9, 18, 27, … all the way to 81, will do. ·         Now multiply your age by 10 ·         Subtract the 9 multiple from this number. ·         Tell me the result. Notice that I don’t know which multiple of 9 you subtracted from 10 times your age. I will nonetheless immediately tell you what your age is. How do I do this? Let’s do the algebra. 10X – 9Y = 10X – 10Y + Y = 10(X – Y) + Y Now remember, you asked an adult, so his/her age is a two digit number (maybe even 3 digits), thus reducing it by the single digit multiplied by nine is still positive – the lowest is can be is 100 – 81 which yields 19. Now make two numbers out of the result. The last digit and the number before it. This number is X – Y or the age minus the single digit you selected. The last digit is this very single digit. This is always so regardless of the digit you selected. So… Add tis digit to the other number and you get back the age! Q.E.D Example: I am 76 years old and here is what happens when I do the steps 76 x 10 = 760 760 – 18 = 742 made of 74 and 2. My age is 74 + 2 760 – 81 = 679 made of 67 and 9. My age is 67 + 9 A note to the socially aware mathemagician – it is safer to do it with a man. The chances of a veracious answer are much, much higher! The trick may be accomplished on any 2 or 3 digit number, not just one’s age, but if you want to know your date’s age, it’s a good way to elicit it. That’s All Folks PS for more Ageless “Age” mathemagics go to www.mgsltns.com/games.htm and also here: http://geekswithblogs.net/PointsToShare/archive/2011/11/15/mathemagics---guess-my-age---method-2.aspx

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