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• NFS issue brings down entire vSphere ESX estate

  - by growse

  I experienced an odd issue this morning where an NFS issue appeared to have taken down the majority of my VMs hosted on a small vSphere 5.0 estate. The infrastructure itself is 4x IBM HS21 blades running around 20 VMs. The storage is provided by a single HP X1600 array with attached D2700 chassis running Solaris 11. There's a couple of storage pools on this which are exposed over NFS for the storage of the VM files, and some iSCSI LUNs for things like MSCS shared disks. Normally, this is pretty stable, but I appreciate the lack of resiliancy in having a single X1600 doing all the storage. This morning, in the logs of each ESX host, at around 0521 GMT I saw a lot of entries like this: 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4cf9a8 3 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4dc9e8 3 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4d3fa8 3 2011-11-30T05:21:54.161Z cpu2:2050)NFSLock: 608: Stop accessing fd 0x41000a4de0a8 3 [....] 2011-11-30T06:16:07.042Z cpu0:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:17:01.459Z cpu2:4011)NFS: 292: Restored connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:25:17.887Z cpu3:2051)NFSLock: 608: Stop accessing fd 0x41000a4c2b28 3 2011-11-30T06:27:16.063Z cpu3:4011)NFSLock: 568: Start accessing fd 0x41000a4d8928 again 2011-11-30T06:35:30.827Z cpu1:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /tank/ISO, mounted as 5acdbb3e-410e56e3-0000-000000000000 ("ISO (1)") 2011-11-30T06:36:37.953Z cpu6:2054)NFS: 292: Restored connection to the server 10.13.111.197 mount point /tank/ISO, mounted as 5acdbb3e-410e56e3-0000-000000000000 ("ISO (1)") 2011-11-30T06:40:08.242Z cpu6:2054)NFSLock: 608: Stop accessing fd 0x41000a4c3e68 3 2011-11-30T06:40:34.647Z cpu3:2051)NFSLock: 568: Start accessing fd 0x41000a4d8928 again 2011-11-30T06:44:42.663Z cpu1:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:44:53.973Z cpu0:4011)NFS: 292: Restored connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:51:28.296Z cpu5:2058)NFSLock: 608: Stop accessing fd 0x41000ae3c528 3 2011-11-30T06:51:44.024Z cpu4:2052)NFSLock: 568: Start accessing fd 0x41000ae3b8e8 again 2011-11-30T06:56:30.758Z cpu4:2058)WARNING: NFS: 283: Lost connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T06:56:53.389Z cpu7:2055)NFS: 292: Restored connection to the server 10.13.111.197 mount point /sastank/VMStorage, mounted as f0342e1c-19be66b5-0000-000000000000 ("SAStank") 2011-11-30T07:01:50.350Z cpu6:2054)ScsiDeviceIO: 2316: Cmd(0x41240072bc80) 0x12, CmdSN 0x9803 to dev "naa.600508e000000000505c16815a36c50d" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x24 0x0. 2011-11-30T07:03:48.449Z cpu3:2051)NFSLock: 608: Stop accessing fd 0x41000ae46b68 3 2011-11-30T07:03:57.318Z cpu4:4009)NFSLock: 568: Start accessing fd 0x41000ae48228 again (I've put a complete dump from one of the hosts on pastebin: http://pastebin.com/Vn60wgTt) When I got in the office at 9am, I saw various failures and alarms and troubleshooted the issue. It turned out that pretty much all of the VMs were inaccessible, and that the ESX hosts either were describing each VM as 'powered off', 'powered on', or 'unavailable'. The VMs described as 'powered on' where not in any way reachable or responding to pings, so this may be lies. There's absolutely no indication on the X1600 that anything was awry, and nothing on the switches to indicate any loss of connectivity. I only managed to resolve the issue by rebooting the ESX hosts in turn. I have a number of questions: What the hell happened? If this was a temporary NFS failure, why did it put the ESX hosts into a state from which a reboot was the only recovery? In the future, when the NFS server goes a little off-piste, what would be the best approach to add some resilience? I've been looking at budgeting for next year and potentially have budget to purchase another X1600/D2700/disks, would an identical mirrored disk setup help to mitigate these sorts of failures automatically? Edit (Added requested details) To expand with some details as requested: The X1600 has 12x 1TB disks lumped together in mirrored pairs as tank, and the D2700 (connected with a mini SAS cable) has 12x 300GB 10k SAS disks lumped together in mirrored pairs as sastank zpool status pool: rpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0 c7t0d0s0 ONLINE 0 0 0 errors: No known data errors pool: sastank state: ONLINE scan: scrub repaired 0 in 74h21m with 0 errors on Wed Nov 30 02:51:58 2011 config: NAME STATE READ WRITE CKSUM sastank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 c7t14d0 ONLINE 0 0 0 c7t15d0 ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 c7t16d0 ONLINE 0 0 0 c7t17d0 ONLINE 0 0 0 mirror-2 ONLINE 0 0 0 c7t18d0 ONLINE 0 0 0 c7t19d0 ONLINE 0 0 0 mirror-3 ONLINE 0 0 0 c7t20d0 ONLINE 0 0 0 c7t21d0 ONLINE 0 0 0 mirror-4 ONLINE 0 0 0 c7t22d0 ONLINE 0 0 0 c7t23d0 ONLINE 0 0 0 mirror-5 ONLINE 0 0 0 c7t24d0 ONLINE 0 0 0 c7t25d0 ONLINE 0 0 0 errors: No known data errors pool: tank state: ONLINE scan: scrub repaired 0 in 17h28m with 0 errors on Mon Nov 28 17:58:19 2011 config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 c7t1d0 ONLINE 0 0 0 c7t2d0 ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 c7t3d0 ONLINE 0 0 0 c7t4d0 ONLINE 0 0 0 mirror-2 ONLINE 0 0 0 c7t5d0 ONLINE 0 0 0 c7t6d0 ONLINE 0 0 0 mirror-3 ONLINE 0 0 0 c7t8d0 ONLINE 0 0 0 c7t9d0 ONLINE 0 0 0 mirror-4 ONLINE 0 0 0 c7t10d0 ONLINE 0 0 0 c7t11d0 ONLINE 0 0 0 mirror-5 ONLINE 0 0 0 c7t12d0 ONLINE 0 0 0 c7t13d0 ONLINE 0 0 0 errors: No known data errors The filesystem exposed over NFS for the primary datastore is sastank/VMStorage zfs list NAME USED AVAIL REFER MOUNTPOINT rpool 45.1G 13.4G 92.5K /rpool rpool/ROOT 2.28G 13.4G 31K legacy rpool/ROOT/solaris 2.28G 13.4G 2.19G / rpool/dump 15.0G 13.4G 15.0G - rpool/export 11.9G 13.4G 32K /export rpool/export/home 11.9G 13.4G 32K /export/home rpool/export/home/andrew 11.9G 13.4G 11.9G /export/home/andrew rpool/swap 15.9G 29.2G 123M - sastank 1.08T 536G 33K /sastank sastank/VMStorage 1.01T 536G 1.01T /sastank/VMStorage sastank/comstar 71.7G 536G 31K /sastank/comstar sastank/comstar/sql_tempdb 6.31G 536G 6.31G - sastank/comstar/sql_tx_data 65.4G 536G 65.4G - tank 4.79T 578G 42K /tank tank/FTP 269G 578G 269G /tank/FTP tank/ISO 28.8G 578G 25.9G /tank/ISO tank/backupstage 2.64T 578G 2.49T /tank/backupstage tank/cifs 301G 578G 297G /tank/cifs tank/comstar 1.54T 578G 31K /tank/comstar tank/comstar/msdtc 1.07G 579G 32.8M - tank/comstar/quorum 577M 578G 47.9M - tank/comstar/sqldata 1.54T 886G 304G - tank/comstar/vsphere_lun 2.09G 580G 22.2M - tank/mcs-asset-repository 7.01M 578G 6.99M /tank/mcs-asset-repository tank/mscs-quorum 55K 578G 36K /tank/mscs-quorum tank/sccm 16.1G 578G 12.8G /tank/sccm As for the networking, all connections between the X1600, the Blades and the switch are either LACP or Etherchannel bonded 2x 1Gbit links. Switch is a single Cisco 3750. Storage traffic sits on its own VLAN segregated from VM machine traffic.

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• my server suddenly crashes every 2 days or so. Programmer has no idea, please help find the cause, here is the top

  - by Alex

  Every couple of days my server suddenly crashes and I must request hardware reset at data center to get it back running. Today I came back to my shell and saw the server was dead and "top" was running on it, and see below for the "top" right before the crash. I opened /var/log/messages and scrolled to the reboot time and see nothing, no errors prior to the hard reboot. (I checked in /etc/syslog.conf and I see "*.info;mail.none;authpriv.none;cron.none /var/log/messages" , isn't this good enough to log all problems?) Usually when I look at the top, the swap is never used up like this! I also don't know why mysqld is at 323% cpu (server only runs drupal and its never slow or overloaded). Solver is my application. I don't know whats that 'sh' doing and 'dovecot' doing. Its driving me crazy over the last month, please help me solve this mystery and stop my downtimes. top - 01:10:06 up 6 days, 5 min, 3 users, load average: 34.87, 18.68, 9.03 Tasks: 500 total, 19 running, 481 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 96.6%sy, 0.0%ni, 1.7%id, 1.8%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8165600k total, 8139764k used, 25836k free, 428k buffers Swap: 2104496k total, 2104496k used, 0k free, 8236k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4421 mysql 15 0 571m 105m 976 S 323.5 1.3 9:08.00 mysqld 564 root 20 -5 0 0 0 R 99.5 0.0 2:49.16 kswapd1 25767 apache 19 0 399m 8060 888 D 79.3 0.1 0:06.64 httpd 25781 apache 19 0 398m 5648 492 R 79.0 0.1 0:08.21 httpd 25961 apache 25 0 398m 5700 560 R 76.7 0.1 0:17.81 httpd 25980 apache 25 0 10816 668 520 R 75.0 0.0 0:46.95 sh 563 root 20 -5 0 0 0 D 71.4 0.0 3:12.37 kswapd0 25766 apache 25 0 399m 7256 756 R 69.7 0.1 0:39.83 httpd 25911 apache 25 0 398m 5612 480 R 58.8 0.1 0:17.63 httpd 25782 apache 25 0 440m 38m 648 R 55.2 0.5 0:18.94 httpd 25966 apache 25 0 398m 5640 556 R 55.2 0.1 0:48.84 httpd 4588 root 25 0 74860 596 476 R 53.9 0.0 0:37.90 crond 25939 apache 25 0 2776 172 84 R 48.9 0.0 0:59.46 solver 4575 root 25 0 397m 6004 1144 R 48.6 0.1 1:00.43 httpd 25962 apache 25 0 398m 5628 492 R 47.9 0.1 0:14.58 httpd 25824 apache 25 0 440m 39m 680 D 47.3 0.5 0:57.85 httpd 25968 apache 25 0 398m 5612 528 R 46.6 0.1 0:42.73 httpd 4477 root 25 0 6084 396 280 R 46.3 0.0 0:59.53 dovecot 25982 root 25 0 397m 5108 240 R 45.9 0.1 0:18.01 httpd 25943 apache 25 0 2916 172 8 R 44.0 0.0 0:53.54 solver 30687 apache 25 0 468m 63m 1124 D 42.3 0.8 0:45.02 httpd 25978 apache 25 0 398m 5688 600 R 23.8 0.1 0:40.99 httpd 25983 root 25 0 397m 5272 384 D 14.9 0.1 0:18.99 httpd 935 root 10 -5 0 0 0 D 14.2 0.0 1:54.60 kjournald 25986 root 25 0 397m 5308 420 D 8.9 0.1 0:04.75 httpd 4011 haldaemo 25 0 31568 1476 716 S 5.6 0.0 0:24.36 hald 25956 apache 23 0 398m 5872 644 S 5.6 0.1 0:13.85 httpd 18336 root 18 0 13004 1332 724 R 0.3 0.0 1:46.66 top 1 root 18 0 10372 212 180 S 0.0 0.0 0:05.99 init 2 root RT -5 0 0 0 S 0.0 0.0 0:00.95 migration/0 3 root 34 19 0 0 0 S 0.0 0.0 0:00.01 ksoftirqd/0 4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 5 root RT -5 0 0 0 S 0.0 0.0 0:00.15 migration/1 6 root 34 19 0 0 0 S 0.0 0.0 0:00 .06 ksoftirqd/1 here is a normal top, when server is working fine: top - 01:50:41 up 21 min, 1 user, load average: 2.98, 2.70, 1.68 Tasks: 271 total, 2 running, 269 sleeping, 0 stopped, 0 zombie Cpu(s): 15.0%us, 1.1%sy, 0.0%ni, 81.4%id, 2.4%wa, 0.1%hi, 0.0%si, 0.0%st Mem: 8165600k total, 2035856k used, 6129744k free, 60840k buffers Swap: 2104496k total, 0k used, 2104496k free, 283744k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2204 apache 17 0 466m 83m 19m S 25.9 1.0 0:22.16 httpd 11347 apache 15 0 466m 83m 19m S 25.9 1.0 0:26.10 httpd 18204 apache 18 0 481m 97m 19m D 25.2 1.2 0:13.99 httpd 4644 apache 18 0 481m 100m 19m D 24.6 1.3 1:17.12 httpd 4727 apache 17 0 481m 99m 19m S 24.3 1.2 1:10.77 httpd 4777 apache 17 0 482m 102m 21m S 23.6 1.3 1:38.27 httpd 8924 apache 15 0 483m 99m 19m S 22.3 1.3 1:13.41 httpd 9390 apache 18 0 483m 99m 19m S 18.9 1.2 1:05.35 httpd 4728 apache 16 0 481m 101m 19m S 14.3 1.3 1:12.50 httpd 4648 apache 15 0 481m 107m 27m S 12.6 1.4 1:18.62 httpd 24955 apache 15 0 467m 82m 19m S 3.3 1.0 0:21.80 httpd 4722 apache 15 0 503m 118m 19m R 1.7 1.5 1:17.79 httpd 4647 apache 15 0 484m 105m 20m S 1.3 1.3 1:40.73 httpd 4643 apache 16 0 481m 100m 20m S 0.7 1.3 1:11.80 httpd 1561 root 15 0 12900 1264 828 R 0.3 0.0 0:00.54 top 4434 mysql 15 0 496m 55m 4812 S 0.3 0.7 0:06.69 mysqld 4646 apache 15 0 481m 100m 19m S 0.3 1.3 1:25.51 httpd 1 root 18 0 10372 692 580 S 0.0 0.0 0:02.09 init 2 root RT -5 0 0 0 S 0.0 0.0 0:00.03 migration/0 3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0 4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 5 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/1 6 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1 7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1 8 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/2 9 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/2 10 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/2 11 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/3 12 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/3 13 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/3 14 root RT -5 0 0 0 S 0.0 0.0 0:00.03 migration/4 15 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/4 16 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/4 17 root RT -5 0 0 0 S 0.0 0.0 0:00.02 migration/5 18 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/5 19 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/5 20 root RT -5 0 0 0 S 0.0 0.0 0:00.01 migration/6 21 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/6 22 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/6 23 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/7

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• [OpenGL ES - Android] Better way to generate tiles

  - by Inoe

  Hi ! I'll start by saying that i'm REALLY new to OpenGL ES (I started yesterday =), but I do have some Java and other languages experience. I've looked a lot of tutorials, of course Nehe's ones and my work is mainly based on that. As a test, I started creating a "tile generator" in order to create a small Zelda-like game (just moving a dude in a textured square would be awsome :p). So far, I have achieved a working tile generator, I define a char map[][] array to store wich tile is on : private char[][] map = { {0, 0, 20, 11, 11, 11, 11, 4, 0, 0}, {0, 20, 16, 12, 12, 12, 12, 7, 4, 0}, {20, 16, 17, 13, 13, 13, 13, 9, 7, 4}, {21, 24, 18, 14, 14, 14, 14, 8, 5, 1}, {21, 22, 25, 15, 15, 15, 15, 6, 2, 1}, {21, 22, 23, 0, 0, 0, 0, 3, 2, 1}, {21, 22, 23, 0, 0, 0, 0, 3, 2, 1}, {26, 0, 0, 0, 0, 0, 0, 3, 2, 1}, {0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0, 0, 0, 0, 0, 1} }; It's working but I'm no happy with it, I'm sure there is a beter way to do those things : 1) Loading Textures : I create an ugly looking array containing the tiles I want to use on that map : private int[] textures = { R.drawable.herbe, //0 R.drawable.murdroite_haut, //1 R.drawable.murdroite_milieu, //2 R.drawable.murdroite_bas, //3 R.drawable.angledroitehaut_haut, //4 R.drawable.angledroitehaut_milieu, //5 }; (I cutted this on purpose, I currently load 27 tiles) All of theses are stored in the drawable folder, each one is a 16*16 tile. I then use this array to generate the textures and store them in a HashMap for a later use : int[] tmp_tex = new int[textures.length]; gl.glGenTextures(textures.length, tmp_tex, 0); texturesgen = tmp_tex; //Store the generated names in texturesgen for(int i=0; i < textures.length; i++) { //Bitmap bmp = BitmapFactory.decodeResource(context.getResources(), textures[i]); InputStream is = context.getResources().openRawResource(textures[i]); Bitmap bitmap = null; try { //BitmapFactory is an Android graphics utility for images bitmap = BitmapFactory.decodeStream(is); } finally { //Always clear and close try { is.close(); is = null; } catch (IOException e) { } } // Get a new texture name // Load it up this.textureMap.put(new Integer(textures[i]),new Integer(i)); int tex = tmp_tex[i]; gl.glBindTexture(GL10.GL_TEXTURE_2D, tex); //Create Nearest Filtered Texture gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR); //Different possible texture parameters, e.g. GL10.GL_CLAMP_TO_EDGE gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT); //Use the Android GLUtils to specify a two-dimensional texture image from our bitmap GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0); bitmap.recycle(); } I'm quite sure there is a better way to handle that... I just was unable to figure it. If someone has an idea, i'm all ears. 2) Drawing the tiles What I did was create a single square and a single texture map : /** The initial vertex definition */ private float vertices[] = { -1.0f, -1.0f, 0.0f, //Bottom Left 1.0f, -1.0f, 0.0f, //Bottom Right -1.0f, 1.0f, 0.0f, //Top Left 1.0f, 1.0f, 0.0f //Top Right }; private float texture[] = { //Mapping coordinates for the vertices 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f }; Then, in my draw function, I loop through the map to define the texture to use (after pointing to and enabling the buffers) : for(int y = 0; y < Y; y++){ for(int x = 0; x < X; x++){ tile = map[y][x]; try { //Get the texture from the HashMap int textureid = ((Integer) this.textureMap.get(new Integer(textures[tile]))).intValue(); gl.glBindTexture(GL10.GL_TEXTURE_2D, this.texturesgen[textureid]); } catch(Exception e) { return; } //Draw the vertices as triangle strip gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, vertices.length / 3); gl.glTranslatef(2.0f, 0.0f, 0.0f); //A square takes 2x so I move +2x before drawing the next tile } gl.glTranslatef(-(float)(2*X), -2.0f, 0.0f); //Go back to the begining of the map X-wise and move 2y down before drawing the next line } This works great by I really think that on a 1000*1000 or more map, it will be lagging as hell (as a reminder, this is a typical Zelda world map : http://vgmaps.com/Atlas/SuperNES/LegendOfZelda-ALinkToThePast-LightWorld.png ). I've read things about Vertex Buffer Object and DisplayList but I couldn't find a good tutorial and nodoby seems to be OK on wich one is the best / has the better support (T1 and Nexus One are ages away). I think that's it, I've putted a lot of code but I think it helps. Thanks in advance !

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• Event Handlers Not Getting Called? - wxWidgets

  - by Alex

  Hello all, I'm working on a program for my C++ programming class, using wxWidgets. I'm having a huge problem in that my event handlers (I assume) are not getting called, because when I click on the button to trigger the event, nothing happens. My question is: Can you help me find the problem and explain why they would not be getting called? The event handlers OnAbout and OnQuit are working, just not OnCompute or OnClear. I'm really frustrated as I can't figure this out. Thanks a bunch in advance! #include "wx/wx.h" #include "time.h" #include <string> using std::string; // create object of Time class Time first; class App: public wxApp { virtual bool OnInit(); }; class MainPanel : public wxPanel { public: // Constructor for panel class // Constructs my panel class // Params - wxWindow pointer // no return type // pre-conditions: none // post-conditions: none MainPanel(wxWindow* parent); // OnCompute is the event handler for the Compute button // params - none // preconditions - none // postconditions - tasks will have been carried otu successfully // returns void void OnCompute(wxCommandEvent& WXUNUSED(event)); // OnClear is the event handler for the Clear button // params - none // preconditions - none // postconditions - all text areas will be cleared of data // returns void void OnClear(wxCommandEvent& WXUNUSED(event)); // Destructor for panel class // params none // preconditions - none // postconditions - none // no return type ~MainPanel( ); private: wxStaticText *startLabel; wxStaticText *endLabel; wxStaticText *pCLabel; wxStaticText *newEndLabel; wxTextCtrl *start; wxTextCtrl *end; wxTextCtrl *pC; wxTextCtrl *newEnd; wxButton *compute; wxButton *clear; DECLARE_EVENT_TABLE() }; class MainFrame: public wxFrame { private: wxPanel *mainPanel; public: MainFrame(const wxString& title, const wxPoint& pos, const wxSize& size); void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); ~MainFrame(); DECLARE_EVENT_TABLE() }; enum { ID_Quit = 1, ID_About, BUTTON_COMPUTE = 100, BUTTON_CLEAR = 200 }; IMPLEMENT_APP(App) BEGIN_EVENT_TABLE(MainFrame, wxFrame) EVT_MENU(ID_Quit, MainFrame::OnQuit) EVT_MENU(ID_About, MainFrame::OnAbout) END_EVENT_TABLE() BEGIN_EVENT_TABLE(MainPanel, wxPanel) EVT_MENU(BUTTON_COMPUTE, MainPanel::OnCompute) EVT_MENU(BUTTON_CLEAR, MainPanel::OnClear) END_EVENT_TABLE() bool App::OnInit() { MainFrame *frame = new MainFrame( _("Good Guys Delivery Time Calculator"), wxPoint(50, 50), wxSize(450,340) ); frame->Show(true); SetTopWindow(frame); return true; } MainPanel::MainPanel(wxWindow* parent) : wxPanel(parent) { startLabel = new wxStaticText(this, -1, "Start Time:", wxPoint(75, 35)); start = new wxTextCtrl(this, -1, "", wxPoint(135, 35), wxSize(40, 21)); endLabel = new wxStaticText(this, -1, "End Time:", wxPoint(200, 35)); end = new wxTextCtrl(this, -1, "", wxPoint(260, 35), wxSize(40, 21)); pCLabel = new wxStaticText(this, -1, "Percent Change:", wxPoint(170, 85)); pC = new wxTextCtrl(this, -1, "", wxPoint(260, 85), wxSize(40, 21)); newEndLabel = new wxStaticText(this, -1, "New End Time:", wxPoint(180, 130)); newEnd = new wxTextCtrl(this, -1, "", wxPoint(260, 130), wxSize(40, 21)); compute = new wxButton(this, BUTTON_COMPUTE, "Compute", wxPoint(135, 185), wxSize(75, 35)); clear = new wxButton(this, BUTTON_CLEAR, "Clear", wxPoint(230, 185), wxSize(75, 35)); } MainPanel::~MainPanel() {} MainFrame::MainFrame(const wxString& title, const wxPoint& pos, const wxSize& size) : wxFrame( NULL, -1, title, pos, size ) { mainPanel = new MainPanel(this); wxMenu *menuFile = new wxMenu; menuFile->Append( ID_About, _("&About...") ); menuFile->AppendSeparator(); menuFile->Append( ID_Quit, _("E&xit") ); wxMenuBar *menuBar = new wxMenuBar; menuBar->Append( menuFile, _("&File") ); SetMenuBar( menuBar ); CreateStatusBar(); SetStatusText( _("Hi") ); } MainFrame::~MainFrame() {} void MainFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) { Close(TRUE); } void MainFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { wxMessageBox( _("Alex Olson\nProject 11"), _("About"), wxOK | wxICON_INFORMATION, this); } void MainPanel::OnCompute(wxCommandEvent& WXUNUSED(event)) { int startT; int endT; int newEndT; double tD; wxString startTString = start->GetValue(); wxString endTString = end->GetValue(); startT = wxAtoi(startTString); endT = wxAtoi(endTString); pC->GetValue().ToDouble(&tD); first.SetStartTime(startT); first.SetEndTime(endT); first.SetTimeDiff(tD); try { first.ValidateData(); newEndT = first.ComputeEndTime(); *newEnd << newEndT; } catch (BaseException& e) { wxMessageBox(_(e.GetMessage()), _("Something Went Wrong!"), wxOK | wxICON_INFORMATION, this); } } void MainPanel::OnClear(wxCommandEvent& WXUNUSED(event)) { start->Clear(); end->Clear(); pC->Clear(); newEnd->Clear(); }

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• create a dictionary or list from string(HTML tag included) in C#

  - by loviji

  Hello, A have a string like this: string s = @" <tr> <td>11</td><td>12</td> </tr> <tr> <td>21</td><td>22</td> </tr> <tr> <td>31</td><td>32</td> </tr>"; How to create Dictionary<int, int> d = new Dictionary<int, int>(); from string s to get same result as : d.Add(11, 12); d.Add(21, 22); d.Add(31, 32);

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• Noise Estimation / Noise Measurement in Image

  - by Drazick

  Hello. I want to estimate the noise in an image. Let's assume the model of an Image + White Noise. Now I want to estimate the Noise Variance. My method is to calculate the Local Variance (3*3 up to 21*21 Blocks) of the image and then find areas where the Local Variance is fairly constant (By calculating the Local Variance of the Local Variance Matrix). I assume those areas are "Flat" hence the Variance is almost "Pure" noise. Yet I don't get constant results. Is there a better way? Thanks.

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• Event Handlers Not Getting Called? - wxWidgets & C++

  - by Alex

  Hello all, I'm working on a program for my C++ programming class, using wxWidgets. I'm having a huge problem in that my event handlers (I assume) are not getting called, because when I click on the button to trigger the event, nothing happens. My question is: Can you help me find the problem and explain why they would not be getting called? The event handlers OnAbout and OnQuit are working, just not OnCompute or OnClear. I'm really frustrated as I can't figure this out. Thanks a bunch in advance! #include "wx/wx.h" #include "time.h" #include <string> using std::string; // create object of Time class Time first; class App: public wxApp { virtual bool OnInit(); }; class MainPanel : public wxPanel { public: // Constructor for panel class // Constructs my panel class // Params - wxWindow pointer // no return type // pre-conditions: none // post-conditions: none MainPanel(wxWindow* parent); // OnCompute is the event handler for the Compute button // params - none // preconditions - none // postconditions - tasks will have been carried otu successfully // returns void void OnCompute(wxCommandEvent& WXUNUSED(event)); // OnClear is the event handler for the Clear button // params - none // preconditions - none // postconditions - all text areas will be cleared of data // returns void void OnClear(wxCommandEvent& WXUNUSED(event)); // Destructor for panel class // params none // preconditions - none // postconditions - none // no return type ~MainPanel( ); private: wxStaticText *startLabel; wxStaticText *endLabel; wxStaticText *pCLabel; wxStaticText *newEndLabel; wxTextCtrl *start; wxTextCtrl *end; wxTextCtrl *pC; wxTextCtrl *newEnd; wxButton *compute; wxButton *clear; DECLARE_EVENT_TABLE() }; class MainFrame: public wxFrame { private: wxPanel *mainPanel; public: MainFrame(const wxString& title, const wxPoint& pos, const wxSize& size); void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); ~MainFrame(); DECLARE_EVENT_TABLE() }; enum { ID_Quit = 1, ID_About, BUTTON_COMPUTE = 100, BUTTON_CLEAR = 200 }; IMPLEMENT_APP(App) BEGIN_EVENT_TABLE(MainFrame, wxFrame) EVT_MENU(ID_Quit, MainFrame::OnQuit) EVT_MENU(ID_About, MainFrame::OnAbout) END_EVENT_TABLE() BEGIN_EVENT_TABLE(MainPanel, wxPanel) EVT_MENU(BUTTON_COMPUTE, MainPanel::OnCompute) EVT_MENU(BUTTON_CLEAR, MainPanel::OnClear) END_EVENT_TABLE() bool App::OnInit() { MainFrame *frame = new MainFrame( _("Good Guys Delivery Time Calculator"), wxPoint(50, 50), wxSize(450,340) ); frame->Show(true); SetTopWindow(frame); return true; } MainPanel::MainPanel(wxWindow* parent) : wxPanel(parent) { startLabel = new wxStaticText(this, -1, "Start Time:", wxPoint(75, 35)); start = new wxTextCtrl(this, -1, "", wxPoint(135, 35), wxSize(40, 21)); endLabel = new wxStaticText(this, -1, "End Time:", wxPoint(200, 35)); end = new wxTextCtrl(this, -1, "", wxPoint(260, 35), wxSize(40, 21)); pCLabel = new wxStaticText(this, -1, "Percent Change:", wxPoint(170, 85)); pC = new wxTextCtrl(this, -1, "", wxPoint(260, 85), wxSize(40, 21)); newEndLabel = new wxStaticText(this, -1, "New End Time:", wxPoint(180, 130)); newEnd = new wxTextCtrl(this, -1, "", wxPoint(260, 130), wxSize(40, 21)); compute = new wxButton(this, BUTTON_COMPUTE, "Compute", wxPoint(135, 185), wxSize(75, 35)); clear = new wxButton(this, BUTTON_CLEAR, "Clear", wxPoint(230, 185), wxSize(75, 35)); } MainPanel::~MainPanel() {} MainFrame::MainFrame(const wxString& title, const wxPoint& pos, const wxSize& size) : wxFrame( NULL, -1, title, pos, size ) { mainPanel = new MainPanel(this); wxMenu *menuFile = new wxMenu; menuFile->Append( ID_About, _("&About...") ); menuFile->AppendSeparator(); menuFile->Append( ID_Quit, _("E&xit") ); wxMenuBar *menuBar = new wxMenuBar; menuBar->Append( menuFile, _("&File") ); SetMenuBar( menuBar ); CreateStatusBar(); SetStatusText( _("Hi") ); } MainFrame::~MainFrame() {} void MainFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) { Close(TRUE); } void MainFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { wxMessageBox( _("Alex Olson\nProject 11"), _("About"), wxOK | wxICON_INFORMATION, this); } void MainPanel::OnCompute(wxCommandEvent& WXUNUSED(event)) { int startT; int endT; int newEndT; double tD; wxString startTString = start->GetValue(); wxString endTString = end->GetValue(); startT = wxAtoi(startTString); endT = wxAtoi(endTString); pC->GetValue().ToDouble(&tD); first.SetStartTime(startT); first.SetEndTime(endT); first.SetTimeDiff(tD); try { first.ValidateData(); newEndT = first.ComputeEndTime(); *newEnd << newEndT; } catch (BaseException& e) { wxMessageBox(_(e.GetMessage()), _("Something Went Wrong!"), wxOK | wxICON_INFORMATION, this); } } void MainPanel::OnClear(wxCommandEvent& WXUNUSED(event)) { start->Clear(); end->Clear(); pC->Clear(); newEnd->Clear(); }

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• How t have the RDLC pie chart show ranges instead of individual values

  - by Emad

  I have some data coming from a custom dataset that look like the following example Person Age P1 20 P2 21 P3 30 P4 31 P5 40 And I want to develop a pie showing the age distribution against the age. The point is that I want this Age to be shown in ranges. (20-29, 30-39, etc for example So we have: Slice with total number =2 (P1 + P2) as age is 20-29 (one at 20 and another at 21) Slice with total number =3 (P3 + P4) as age is 30-39 (one at 30 and another at 31) Slice with total number =1 (P5) as age is 40 (one at 40). How can i customize the pie chart to aggregate values by ranges that I can define?

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• NSFetchRequest returns correct number of objects, but each object contains nil attributes

  - by BU

  Hi, I can't figure out why this is happening. I can add to the context. But when I retrieve the objects, it returns the correct number of objects but the attributes of the objects are null. I am adding 3 instances with this code: +(BOOL)addStoreWithID:(NSNumber *)ID Latitude:(NSNumber *)latitude Longitude:(NSNumber *)longitude Name:(NSString *)name { Stores *store = (Stores *)[NSEntityDescription insertNewObjectForEntityForName:@"Stores" inManagedObjectContext:[[SharedResources instance] managedObjectContext]]; store.ID = ID; store.Latitude = latitude; store.Longitude = longitude; store.Name = name; NSError *error; if(![[[SharedResources instance] managedObjectContext] save:&error]) { //Handle the error return NO; } return YES; } I get the result: 2010-03-07 19:19:37.060 GamePouch_iPhone[11337:207] Store name is Starbucks (gdb) continue 2010-03-07 19:19:37.933 GamePouch_iPhone[11337:207] Store name is Dunkin Donuts (gdb) continue 2010-03-07 19:19:38.717 GamePouch_iPhone[11337:207] Store name is Krispy Kreme I have confirmed that this code is visited three times and none of the attributes are nil. Then when I try to retrieve it, I use the following code: +(NSMutableArray *)fetchAllObjects { NSFetchRequest *request; request = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Stores" inManagedObjectContext:[[SharedResources instance] managedObjectContext]]; [request setEntity:entity]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"ID" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [request setSortDescriptors:sortDescriptors]; NSError *error; NSMutableArray *array = [[[SharedResources instance] managedObjectContext] executeFetchRequest:request error:&error]; [request release]; [sortDescriptor release]; [sortDescriptors release]; for(int i=0;i<3;i++) { Stores *tempStore = (Stores *)[array objectAtIndex:i]; NSLog(@"store name is %@",[tempStore Name]); } return array; } I get the result: 2010-03-07 19:21:00.504 GamePouch_iPhone[11337:207] store name is (null) (gdb) continue 2010-03-07 19:21:01.541 GamePouch_iPhone[11337:207] store name is (null) (gdb) continue 2010-03-07 19:21:02.503 GamePouch_iPhone[11337:207] store name is (null) Thanks a lot for reading. Any help would be much appreciated. Thanks Bakhtiyar uddin

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• How does the Twitter rate limit API work with multiple accounts?

  - by dfrankow

  I know there's a Rest API to check the Twitter rate limit. To summarize policy: 150 for an IP, and 150 per non-whitelisted account except for searches (which are IP only). However, my app is using Twython, authenticated, but the limit seems to decrease for both my accounts as I use it. Example: No authentication: $ wget http://api.twitter.com/1/account/rate_limit_status.xml -O - <?xml version="1.0" encoding="UTF-8"?> <hash> <hourly-limit type="integer">150</hourly-limit> <reset-time-in-seconds type="integer">1266968961</reset-time-in-seconds> <reset-time type="datetime">2010-02-23T23:49:21+00:00</reset-time> <remaining-hits type="integer">134</remaining-hits> </hash> Authentication with account #1: $ wget --user b... --password=youwish http://api.twitter.com/1/account/rate_limit_status.xml -O - <?xml version="1.0" encoding="UTF-8"?> <hash> <reset-time-in-seconds type="integer">1266968961</reset-time-in-seconds> <reset-time type="datetime">2010-02-23T23:49:21+00:00</reset-time> <remaining-hits type="integer">134</remaining-hits> <hourly-limit type="integer">150</hourly-limit> </hash> Authentication with account #2: $ wget --user d... --password=youwish http://api.twitter.com/1/account/rate_limit_status.xml -O - <?xml version="1.0" encoding="UTF-8"?> <hash> <reset-time type="datetime">2010-02-23T23:49:21+00:00</reset-time> <remaining-hits type="integer">134</remaining-hits> <hourly-limit type="integer">150</hourly-limit> <reset-time-in-seconds type="integer">1266968961</reset-time-in-seconds> </hash> You see how both accounts seem to have exactly the same rate limit info (134/150)? I only used one account in my app, so why do both accounts show decrease?

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• WPF: Setting toolbar button sizes using a Style

  - by Allen Ho

  I have buttons on a toolbar in WPF. When I do the XAML: <ToolBar.Resources> <Style TargetType="{x:Type Button}"> <Setter Property="Width" Value="21"></Setter> <Setter Property="Height" Value="21"></Setter> </Style> </ToolBar.Resources> None of the buttons on the toolbar set their sizes accordingly. I have to go to each button and manually set their widths and heights to the desired values. Any idea why the Style on the toolbar does not work?

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• draw line over uilable after loading from nib

  - by Nnp

  here is my code CGContextRef c = UIGraphicsGetCurrentContext(); CGContextBeginPath(c); CGContextMoveToPoint(c, 277.0f, 21.0f); CGFloat newpoint = 277.0f + (CGFloat)(self.msrp.text.length * 8); //NSLog(@"%f", newpoint); CGContextAddLineToPoint(c, newpoint, 21.0f); CGContextStrokePath(c); i am trying to draw a line over UIlabel, i am loading my view from nib.i dont know what i am doing wrong. i just work fine if i draw entire view instead loading from nib.(but i dont wanna do that)

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• Having two ODP.NET (ODAC) versions in the same server

  - by vizcaynot

  Hello: Some months ago, a colleague of mine installed ODAC 11.106.21 in a server using XCOPY and then he developed many applications that use this client without problems (in test and production windows servers). Past week, I developed an application under ODAC 11.1.07.20. When I asked him to install these new ODAC version using XCOPY in a different folder and then include my application in the test server, he answered me that I should use ODAC 11.106.21 because he could have troubles with his applications. So I would like to know: 1) If it is really possible to have two different ODAC versions in one server. 2) If the answer is positive, how can I firmly ensure to my colleague that he will not have troubles with his applications? 3) If the answer is positive, is this necessary to do some kind of configuration in the server? Thanks!!

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• Date Picker Blue

  - by Matt Winters

  I'm successfully setting a date-picker with an initial date from a plist, but I see some unwanted blue values in the month, day, and year components, presumably corresponding to current date. So if today is April 18, 2010 and initial date being set is March 19, 2008, it looks like this (bold represents the blue): January 17 2006 February 18 2007 ------------------------------ March 19 2008 ------------------------------ April 20 2009 May 21 2010 First question is: How do I get rid of the blue? And second question: Ideally, how do I get it to look like this? January 17 2006 February 18 2007 ------------------------------ March 19 2008 ------------------------------ April 20 2009 May 21 2010 Third question, totally unrelated and not as important: How could I have gotten the above to show in blue rather than bold? I see blue in code snippets all the time. Matt

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• Regular expression in C#

  - by user340015

  i have text something like this. @@MMIVLoader@[email protected]@BCM_7400S_LE@Product@Aug 21 2009@ @@MMIVLib@[email protected]@BCM_7400S_LE@Product@Aug 21 2009@ @@HuaweFGDLDrv@[email protected]@7324@PRODUCT@Aug 20 2009@ @@ProtectVer@[email protected] @BCM_SDE5.03@PRODUCT@Aug 4 2009 06:56:19@ @@KernelSw@[email protected]@BCM-7454@PRODUCT@ Dec 19 2007@ @@ReceiverSw@[email protected]@HWBC01ZS@PRODUCT@May 3 2010@ i want the out put in an array like MMIVLoader 4.1.2 MMIVLib 4.1.2 HuaweFGDLDrv 01.00.09 ProtectVer 127.8.1 KernelSw 0.0.1 ReceiverSw E.5.6.001 Can any one suggest me how to do this in c# using regular expression or is there a any sophisticated way to do this thanks in advance

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• Age verification forms and crawlers

  - by user333763

  I have created a website about some beer brand and had to include age verification page. The verification script is written in PHP and uses sessions to store verification variable. The script works the way that no matter form which link you will try to enter the website it will take you to the verification page first. The verification is very simple. There are 2 button: "I'm under 21" and "I'm over 21". If you click the latter, you can browse the website. After some time I discovered that the web crawlers are not able to get past verification page. I checked the website in Google webmaster tools and the only text content scanned was from the verification page. I read somewhere that crawlers are not able to submit form buttons, is it true? Considering the fact that age verification pages are useless anyways, maybe I should just leave it as a starting page but don't forbid going around it, e.g. from links to the subpages?

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• Error 18456. State 6 "Attempting to use an NT account name with SQL Server Authentication."

  - by Aragorn

  2010-05-06 17:21:22.30 Logon Error: 18456, Severity: 14, State: 6. 2010-05-06 17:21:22.30 Logon Login failed for user . Reason: Attempting to use an NT account name with SQL Server Authentication. [CLIENT: ] The authentication mode is "Mixed". And its MS SQL Server 2008. What might be the issue? Do you think the user name was not configured properly? Is there any link available for giving the right privileges and configuring the user account? So that I can check the rights and privileges for the acc I am using... thanks

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• Convert json to a string using jquery

  - by becomingGuru

  I have a nested json. I want to post it as a form input value. But, seems like jquery puts "Object object" string into the value. It seems easier to pass around the string and convert into the native form I need, than dealing with json as I don't need to change anything once it is generated. What is the simplest way to convert a json var json = { "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ], "newSubscription": false, "companyName": null }; into its string form? var json = '{ "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ], "newSubscription": false, "companyName": null }' Following doesn't do what I need: Json.stringify()

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• MySQL Volleyball Standings

  - by Torez

  I have a database table full of game by game results and want to know if I can calculate the following: GP (games played) Wins Loses Points (2 points for each win, 1 point for each lose) Here is my table structure: CREATE TABLE `results` ( `id` int(10) unsigned NOT NULL auto_increment, `home_team_id` int(10) unsigned NOT NULL, `home_score` int(3) unsigned NOT NULL, `visit_team_id` int(10) unsigned NOT NULL, `visit_score` int(3) unsigned NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=7 ; And a few testing results: INSERT INTO `results` VALUES(1, 1, 21, 2, 25); INSERT INTO `results` VALUES(2, 3, 21, 4, 17); INSERT INTO `results` VALUES(3, 1, 25, 3, 9); INSERT INTO `results` VALUES(4, 2, 7, 4, 22); INSERT INTO `results` VALUES(5, 1, 19, 4, 20); INSERT INTO `results` VALUES(6, 2, 24, 3, 26); Here is what a final table would look like: +-------------------+----+------+-------+--------+ | Team Name | GP | Wins | Loses | Points | +-------------------+----+------+-------+--------+ | Spikers | 4 | 4 | 0 | 8 | | Leapers | 4 | 2 | 2 | 6 | | Ground Control | 4 | 1 | 3 | 5 | | Touch Guys | 4 | 0 | 4 | 4 | +-------------------+----+------+-------+--------+

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• PHP JSON encode output number as string

  - by mitch

  I am trying to output a JSON string using PHP and MySQL but the latitude and longitude is outputting as a string with quotes around the values. This causes an issue when I am trying to add the markers to a google map. Here is my code: $sql = mysql_query('SELECT * FROM markers WHERE address !=""'); $results = array(); while($row = mysql_fetch_array($sql)) { $results[] = array( 'latitude' =>$row['lat'], 'longitude' => $row['lng'], 'address' => $row['address'], 'project_ID' => $row['project_ID'], 'marker_id' => $row['marker_id'] ); } $json = json_encode($results); echo "{\"markers\":"; echo $json; echo "}"; Here is the expected output: {"markers":[{"latitude":0.000000,"longitude":0.000000,"address":"2234 2nd Ave, Seattle, WA","project_ID":"7","marker_id":"21"}]} Here is the output that I am getting: {"markers":[{"latitude":"0.000000","longitude":"0.000000","address":"2234 2nd Ave, Seattle, WA","project_ID":"7","marker_id":"21"}]} Notice the quotes around the latitude and longitude values.

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• latest Xemacs on Windows binary download

  - by anjanb

  I'm trying to get an updated version for Windows vista. I previously got 21.4.22 but it's been a year since that release. The linux versions should be 22.x. I'm wondering if anyone else builds stable binaries for Windows ? 21.4.22 has several bugs and I cannot figure out how to fix them. I know Xemacs is not as active as GNU emacs but still aren't there any Xemacs users on windows who build their own copies even if the official site doesn't ? I would like to be able to compare buffers, files and directories apart from being able to edit any file : java, javascript, ruby, .bat, .sh, .xml, etc.

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• How to calculate End and start Week?

  - by Kip Birgen

  how does one calculate the beginning of a week from a given date e.g 23 March 2010 beginning of the week is 21 March 2010

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• How do I add a column that displays the number of distinct rows to this query?

  - by Fake Code Monkey Rashid

  Hello good people! I don't know how to ask my question clearly so I'll just show you the money. To start with, here's a sample table: CREATE TABLE sandbox ( id integer NOT NULL, callsign text NOT NULL, this text NOT NULL, that text NOT NULL, "timestamp" timestamp with time zone DEFAULT now() NOT NULL ); CREATE SEQUENCE sandbox_id_seq START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE CACHE 1; ALTER SEQUENCE sandbox_id_seq OWNED BY sandbox.id; SELECT pg_catalog.setval('sandbox_id_seq', 14, true); ALTER TABLE sandbox ALTER COLUMN id SET DEFAULT nextval('sandbox_id_seq'::regclass); INSERT INTO sandbox VALUES (1, 'alpha', 'foo', 'qux', '2010-12-29 16:51:09.897579+00'); INSERT INTO sandbox VALUES (2, 'alpha', 'foo', 'qux', '2010-12-29 16:51:36.108867+00'); INSERT INTO sandbox VALUES (3, 'bravo', 'bar', 'quxx', '2010-12-29 16:52:36.370507+00'); INSERT INTO sandbox VALUES (4, 'bravo', 'foo', 'quxx', '2010-12-29 16:52:47.584663+00'); INSERT INTO sandbox VALUES (5, 'charlie', 'foo', 'corge', '2010-12-29 16:53:00.742356+00'); INSERT INTO sandbox VALUES (6, 'delta', 'foo', 'qux', '2010-12-29 16:53:10.884721+00'); INSERT INTO sandbox VALUES (7, 'alpha', 'foo', 'corge', '2010-12-29 16:53:21.242904+00'); INSERT INTO sandbox VALUES (8, 'alpha', 'bar', 'corge', '2010-12-29 16:54:33.318907+00'); INSERT INTO sandbox VALUES (9, 'alpha', 'baz', 'quxx', '2010-12-29 16:54:38.727095+00'); INSERT INTO sandbox VALUES (10, 'alpha', 'bar', 'qux', '2010-12-29 16:54:46.237294+00'); INSERT INTO sandbox VALUES (11, 'alpha', 'baz', 'qux', '2010-12-29 16:54:53.891606+00'); INSERT INTO sandbox VALUES (12, 'alpha', 'baz', 'corge', '2010-12-29 16:55:39.596076+00'); INSERT INTO sandbox VALUES (13, 'alpha', 'baz', 'corge', '2010-12-29 16:55:44.834019+00'); INSERT INTO sandbox VALUES (14, 'alpha', 'foo', 'qux', '2010-12-29 16:55:52.848792+00'); ALTER TABLE ONLY sandbox ADD CONSTRAINT sandbox_pkey PRIMARY KEY (id); Here's the current SQL query I have: SELECT * FROM ( SELECT DISTINCT ON (this, that) id, this, that, timestamp FROM sandbox WHERE callsign = 'alpha' AND CAST(timestamp AS date) = '2010-12-29' ) playground ORDER BY timestamp DESC This is the result it gives me: id this that timestamp ----------------------------------------------------- 14 foo qux 2010-12-29 16:55:52.848792+00 13 baz corge 2010-12-29 16:55:44.834019+00 11 baz qux 2010-12-29 16:54:53.891606+00 10 bar qux 2010-12-29 16:54:46.237294+00 9 baz quxx 2010-12-29 16:54:38.727095+00 8 bar corge 2010-12-29 16:54:33.318907+00 7 foo corge 2010-12-29 16:53:21.242904+00 This is what I want to see: id this that timestamp count ------------------------------------------------------------- 14 foo qux 2010-12-29 16:55:52.848792+00 3 13 baz corge 2010-12-29 16:55:44.834019+00 2 11 baz qux 2010-12-29 16:54:53.891606+00 1 10 bar qux 2010-12-29 16:54:46.237294+00 1 9 baz quxx 2010-12-29 16:54:38.727095+00 1 8 bar corge 2010-12-29 16:54:33.318907+00 1 7 foo corge 2010-12-29 16:53:21.242904+00 1 EDIT: I'm using PostgreSQL 9.0.* (if that helps any).

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• Easy to use time-stamps in Python

  - by Morlock

  I'm working on a journal-type application in Python. The application basically permits the user write entries in the journal and adds a time-stamp for later querying the journal. As of now, I use the time.ctime() function to generate time-stamps that are visually friendly. The journal entries thus look like: Thu Jan 21 19:59:47 2010 Did something Thu Jan 21 20:01:07 2010 Did something else Now, I would like to be able to use these time-stamps to do some searching/querying. I need to be able to search, for example, for "2010", or "feb 2010", or "23 feb 2010". My questions are: 1) What time module(s) should I use: time vs datetime? 2) What would be an appropriate way of creating and using the time-stamp objects? Many thanks!

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• crystal reporting in vs2008

  - by hatem gamil

  hi all i wana ask a question about crystal reporting in vs 2008 lets say i have a report with these data customer_ID Customer_Name Order_amoont Order_Date (#group1 VipCustomer) 1 xyz 3 1/1/2010 2 abc 4 2/2/2010 5 sds 21 3/12/2009 (#Group2 NormalCustomer) 3 tyt 2 3/3/2010 4 ha 4 21/3/2009 i want only to display records where Order_Date year is in 2010 only so i went to the section expert and i added a condintion in suppress formula Year(order_Date)=2010 and i get the result ,,the question is how to count how many vip customers ordered in 2010 only and how many normal customer order in 2010 only ,,then i want the total number of both type of customers to be displayed to have a report like that:: customer_ID Customer_Name Order_amoont Order_Date (#group1 VipCustomer) 1 xyz 3 1/1/2010 2 abc 4 2/2/2010 subtotal 2 (#Group2 NormalCustomer) 3 tyt 2 3/3/2010 subtotal 1 total 3 thnx

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