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  • Why Keep These 10 A Penny " How Long Will It Take To Program in Blah Blah Blah Language Questions" Open Yet Close This Question..? [migrated]

    - by user866190
    Why keep this question open and others like it open which basically asks how long does it take to learn a programming language? Yet I ask a valid question which basically asks how esteemed is a mathematics degree from the UK open university and would software employers hire whilst you are the course.. and it gets closed I love the advice I get from this site and I appreciate the fact that Software Technicians of all types use this site, but it's a bit shallow if you can't ask a question with a little bit of the real world involved

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  • How to record both audio, Where i have one music running and my microphone is in use?

    - by YumYumYum
    I have one music playing, and i have microphone open, already the microphone is used by other application. In such case, how can i record that music and the microphone audio to a file? (if possible with command line). Follow up: $ rec new-file.wav Input File : 'default' (alsa) Channels : 2 Sample Rate : 48000 Precision : 16-bit Sample Encoding: 16-bit Signed Integer PCM In:0.00% 00:00:25.94 [00:00:00.00] Out:1.24M [ | ] Clip:0 ^C $ sox -d new-file.wav

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  • The Little Server that Could [Humorous Image]

    - by Asian Angel
    Anyone up for a bit of miniaturized water-skiing fun? Note: Make sure to visit the Reddit link below for some enjoyable comment reading. Would not want to go to work and find this [via Reddit - Tech Support Gore] HTG Explains: Does Your Android Phone Need an Antivirus? How To Use USB Drives With the Nexus 7 and Other Android Devices Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder?

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  • orange screen with vertical stripes

    - by Skapeven
    After having installed Ubuntu without Internet conecction, I restart the PC, go to BIOS, change boot priority to internal harddrive, save and exit. Then the PC starts again but the screen gets orange with vertical stripes and stays like that. I tried both versions 64 bit and 32 bit 12.04. I can't use internet before having Ubuntu, because y have to make a network configuration(this is not allowed in the trial version before the installed version).

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  • Uninstall libgl? Program using libgl instead of Nvidia's OpenGL libraries

    - by Tek
    I'm running Ubuntu 12.10 64-bit. I'm trying to get valve's new Linux Steam client running, but having a bit of trouble getting it to detect the right libraries or at least I think that's the issue. I installed the latest 310.19 Nvidia proprietary drivers from geforce.com. Here's the screenshot: I tried uninstalling xserver-xorg-video-nouveau thinking this was the problem but I'm still getting the same error. Any ideas what I can do for Steam to detect the right Nvidia OpenGL libraries?

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  • My Ubuntu 12.10 will not start

    - by Adam Sales
    I'll boot my computer, then it'll get going, go to a purple screen and then my monitor goes to sleep, i've restarted it several times, and tried to get it to boot, no matter what it keeps going to the black screen. I've tried reinstalling ubuntu, i've even tried both 64 bit, and 32 bit. i have not once got it to a normal boot successfully either.It just won't run in normal boot, so i'm resorted to using safe mode, please help me, idk what to do.

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  • CVE-2012-1714 TList 6 ActiveX control remote code execution vulnerability in Hyperion Financial Management

    - by chandan
    CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2012-1714 Remote code execution vulnerability 10 TList 6 ActiveX control Hyperion Financial Management 11.1.1.4 Contact Support Hyperion Financial Management 11.1.2.1.104 Microsoft Windows (32-bit) Microsoft Windows (64-bit) This notification describes vulnerabilities fixed in third-party components that are included in Sun's product distribution.Information about vulnerabilities affecting Oracle Sun products can be found on Oracle Critical Patch Updates and Security Alerts page.

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  • Computer Engineer in CS Interview

    - by blasteye
    As a Computer Engineering student, while in school I've primarily dealt with C, Matlab, and VHDL. On my own though, i learned a bit about OOP (Polymorphism, inheritance, encapsulation), and have done quite a bit of web development using JavaScript/PHP/Node.js While at coding interviews I've be asked academia CS questions such as "abstract vs interface". The problem is that I didn't know the official terminology, but I have dealt with this type of programming decisions/concepts. Could anyone recommend a good resource for me to learn these academia CS terms?

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  • Should I use SVG for icons? [on hold]

    - by Nick Maddren
    I'm just wondering what is the preferred practice for adding icons? I see quite a bit of hype over SVG images however having a bit of trouble understanding how they are implemented as every article I read seems out of date. I need icons for simple lists, the icons need to be one solid color. I feel as if using png's was so 2008 haha, would you recommend the use of SVG images or are developers using other methods to display icons now?

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  • Multiple Problems Installing 12.04, now can't use Windows

    - by user87997
    First I tried using the 32-bit wubi.exe installer from the main Ubuntu website. It worked fine, dual booted with Windows 7 and all. I tried installing several applications and got errors. After searching for a little while for a fix, I found that someone else had solved the problem by uninstalling the 32-bit version and installing 64-bit Ubuntu. Apparently there is no wubi.exe installer for the 64-bit version, so I used LinuxLive to put the iso file onto a USB drive. I changed my the boot order in BIOS to check the USB first. It did, and I got into the Ubuntu installer just fine. Everything was working fine, but then I got an error that GRUB could not be installed. I chose "install manually later" or something like that. Immediately, the installer said it was done and ready for a reboot. At this point, my USB is still in the computer. The computer reboots...and it's back at the installer for the USB. I look up what's going on here, and someone says in a thread they solved it by selecting "Try Ubuntu" then installing it via a shortcut on the desktop. I assumed that Ubuntu simply hadn't installed and it would be safe to try again, so I did. It finished installing, this time I chose a different partition that wasn't being used. The thread also said to reinstall grub to the mounted drive, so I did that. Next I took out my USB and rebooted. I get stuck on the GRUB GNU loader, v.1.99 or something I believe it says at the top. I can't do anything, and it doesn't detect Windows 7 OR Ubuntu. When I check partitions, I have two 43 GB partitions that both have the same files in them (I'm assuming those are the two Ubuntu installations), and can only run Ubuntu off of my USB-- and can't run Windows 7 at all, however from within Ubuntu the windows 7 filesystem and files can still be seen. I have no idea what to do now. I used Ubuntu in the past (9.xx) and never had these sorts of problems! Please help. And sorry for the wall of text.

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  • SimplyMEPIS 8.5 RC3 Is Here, the Final Release Candidate

    <b>Softpedia:</b> "MEPIS has now made available the third release candidate of its upcoming Linux-based operating system, SimplyMEPIS 8.5 RC 3. The new release comes with several updates, both upgraded packages and fresh features, and is available for 32-bit, as well as 64-bit platforms."

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  • Search Engine Optimization For Beginners

    Learning about the SEO techniques can be scary and a bit overwhelming to say the least. If you do not know anything about SEO now is the time to learn, before trying to do it with just a little bit of knowledge, you will fail if you do it that way.

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  • Encouter error "Linux ip -6 addr add failed" while setting up OpenVPN client

    - by Mickel
    I am trying to set up my router to use OpenVPN and have gotten quite far (I think), but something seems to be missing and I am not sure what. Here is my configuration for the client: client dev tun proto udp remote ovpn.azirevpn.net 1194 remote-random resolv-retry infinite auth-user-pass /tmp/password.txt nobind persist-key persist-tun ca /tmp/AzireVPN.ca.crt remote-cert-tls server reneg-sec 0 verb 3 OpenVPN client log: Nov 8 15:45:13 rc_service: httpd 15776:notify_rc start_vpnclient1 Nov 8 15:45:14 openvpn[27196]: OpenVPN 2.3.2 arm-unknown-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [MH] [IPv6] built on Nov 1 2013 Nov 8 15:45:14 openvpn[27196]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts Nov 8 15:45:14 openvpn[27196]: Socket Buffers: R=[116736->131072] S=[116736->131072] Nov 8 15:45:14 openvpn[27202]: UDPv4 link local: [undef] Nov 8 15:45:14 openvpn[27202]: UDPv4 link remote: [AF_INET]178.132.75.14:1194 Nov 8 15:45:14 openvpn[27202]: TLS: Initial packet from [AF_INET]178.132.75.14:1194, sid=44d80db5 8b36adf9 Nov 8 15:45:14 openvpn[27202]: WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this Nov 8 15:45:14 openvpn[27202]: VERIFY OK: depth=1, C=RU, ST=Moscow, L=Moscow, O=Azire Networks, OU=VPN, CN=Azire Networks, name=Azire Networks, [email protected] Nov 8 15:45:14 openvpn[27202]: Validating certificate key usage Nov 8 15:45:14 openvpn[27202]: ++ Certificate has key usage 00a0, expects 00a0 Nov 8 15:45:14 openvpn[27202]: VERIFY KU OK Nov 8 15:45:14 openvpn[27202]: Validating certificate extended key usage Nov 8 15:45:14 openvpn[27202]: ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication Nov 8 15:45:14 openvpn[27202]: VERIFY EKU OK Nov 8 15:45:14 openvpn[27202]: VERIFY OK: depth=0, C=RU, ST=Moscow, L=Moscow, O=AzireVPN, OU=VPN, CN=ovpn, name=ovpn, [email protected] Nov 8 15:45:15 openvpn[27202]: Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key Nov 8 15:45:15 openvpn[27202]: Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Nov 8 15:45:15 openvpn[27202]: Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key Nov 8 15:45:15 openvpn[27202]: Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Nov 8 15:45:15 openvpn[27202]: Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA Nov 8 15:45:15 openvpn[27202]: [ovpn] Peer Connection Initiated with [AF_INET]178.132.75.14:1194 Nov 8 15:45:17 openvpn[27202]: SENT CONTROL [ovpn]: 'PUSH_REQUEST' (status=1) Nov 8 15:45:17 openvpn[27202]: PUSH: Received control message: 'PUSH_REPLY,ifconfig-ipv6 2a03:8600:1001:4010::101f/64 2a03:8600:1001:4010::1,route-ipv6 2000::/3 2A03:8600:1001:4010::1,redirect-gateway def1 bypass-dhcp,dhcp-option DNS 194.1.247.30,tun-ipv6,route-gateway 178.132.77.1,topology subnet,ping 3,ping-restart 15,ifconfig 178.132.77.33 255.255.255.192' Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: timers and/or timeouts modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: --ifconfig/up options modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: route options modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: route-related options modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified Nov 8 15:45:17 openvpn[27202]: TUN/TAP device tun0 opened Nov 8 15:45:17 openvpn[27202]: TUN/TAP TX queue length set to 100 Nov 8 15:45:17 openvpn[27202]: do_ifconfig, tt->ipv6=1, tt->did_ifconfig_ipv6_setup=1 Nov 8 15:45:17 openvpn[27202]: /usr/sbin/ip link set dev tun0 up mtu 1500 Nov 8 15:45:18 openvpn[27202]: /usr/sbin/ip addr add dev tun0 178.132.77.33/26 broadcast 178.132.77.63 Nov 8 15:45:18 openvpn[27202]: /usr/sbin/ip -6 addr add 2a03:8600:1001:4010::101f/64 dev tun0 Nov 8 15:45:18 openvpn[27202]: Linux ip -6 addr add failed: external program exited with error status: 254 Nov 8 15:45:18 openvpn[27202]: Exiting due to fatal error Any ideas are most welcome!

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  • Poor performance of single processor 32bit Windows XP xompared SMP in VBA+Excel

    - by Adam Ryczkowski
    Welcome! On many computers I experienced poor performance of 32 bit guests running on 64 bit Linux host (I used only the Debian family). At last I managed to collect benchmark data. I made the benchmark by running custom VBA macro, (which we use in our company) that generates 284 pages long Word document full of Excel Pie charts, tables and comments. The macro is run as a single task (excluding the standard services) on a set of identically configured Windows XP 32-bit systems. I measured the time (in sec.) needed to perform the test. The computer (i.e. my notebook Asus P53E) supports both VT-d extensions and native Windows XP. It has 2-core processor, each core is hyperthreaded, so in total we have 4 mostly independent execution units. I use the latest VirtualBox 4.2 and VMWare Workstation 9.0 for Linux, installed together on the same host (running Mint 13 Maya) but never run simultaneously. The results (in column Time) are no less accurate than ± 10% Here are the results (sorry for the format, but I couldn't find out a better solution for tables in SO): +---------------+-------------+------------------------------------------------------+---------+------------+----------------+------+ | Host software | # processor | Windows kernel | IO APIC | VT-x/AMD-V | 2D Video Accel | Time | +---------------+-------------+------------------------------------------------------+---------+------------+----------------+------+ | VirtualBox | 1 | Advanced Configuration and Power Interface (ACPI) PC | 0 | 1 | 0 | 1139 | | VirtualBox | 1 | Advanced Configuration and Power Interface (ACPI) PC | 0 | 1 | 1 | 1050 | | VirtualBox | 1 | Advanced Configuration and Power Interface (ACPI) PC | 0 | 0 | 1 | 1644 | | VirtualBox | 4 | ACPI Multiprocessor PC | 1 | 1 | 1 | 6809 | | VMWare | 1 | ACPI Uniprocessor PC | | 1 | 1 | 1175 | | VMWare | 4 | ACPI Multiprocessor PC | | 1 | 1 | 3412 | | Native | 4 | ACPI Multiprocessor PC | | | | 1693 | | Native | 1 | Advanced Configuration and Power Interface (ACPI) PC | | | | 1170 | +---------------+-------------+------------------------------------------------------+---------+------------+----------------+------+ Here are the striking conclusions: Although I've read in the VirtualBox fora about abysmal performance with 32-bit guest on 64-bit host, VMWare also has problems compared to native run, still being twice faster(!) than VBox. Although VBA is inherently single-threaded, the Excel calculations, which take much more than a half of total computation time, supposedly aren't. So one would expect some speed gain when running on 2+ cores ("+" for hyperthreading). What we see is a speed loss. And quite big one too. For the VirtualBox the VT-d extension isn't a big deal. Can anyone shed some light on why the singlethreaded Windows kernel is so much faster than the SMP one?

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  • GooglePlayServicesNotAvailable: GooglePlayServices not available due to error 1

    - by Mathias Lin
    I'm on Galaxy S III with Android 4.0.4, Google Play installed. In my app I try to get a token from the Google Play services, as described on https://developers.google.com/android/google-play-services/authentication. Since it's all quite new (the Google pages were last updated this week), there's not much documentation to be found, especially about each specific error code. final String token = GoogleAuthUtil.getToken(this, "[email protected]", "scope"); gives me an exception: 09-30 11:24:36.075: ERROR/GoogleAuthUtil(11984): GooglePlayServices not available due to error 1 09-30 11:24:36.105: ERROR/AuthTokenCheck_(11984): Error 1 com.google.android.gms.auth.GooglePlayServicesAvailabilityException: GooglePlayServicesNotAvailable at com.google.android.gms.auth.GoogleAuthUtil.f(Unknown Source) at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source) at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source) at mobi.app.activity.AuthTokenCheck.getAndUseAuthTokenBlocking(AuthTokenCheck.java:148) at mobi.app.activity.AuthTokenCheck$1.doInBackground(AuthTokenCheck.java:61) at android.os.AsyncTask$2.call(AsyncTask.java:264) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) at java.util.concurrent.FutureTask.run(FutureTask.java:137) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) at java.lang.Thread.run(Thread.java:856) https://developers.google.com/android/google-play-services/reference/com/google/android/gms/auth/package-summary tells me: GooglePlayServicesAvailabilityExceptions are special instances of UserRecoverableAuthExceptions which are thrown when the expected Google Play services app is not available for some reason. But what exactly does that mean? And how to resolve it? I've added the Google Play services extras in my SDK and the jar to my project, marked as 'exported'. I'm also wondering what the "Google Play services app" exactly is. Unfortunately it's all not very clearly described at https://developers.google.com/android/google-play-services/. The Google Play services component is delivered as an APK through the Google Play Store, so updates to Google Play services are not dependent on carrier or OEM system image updates. Newer devices will also have Google Play services as part of the device's system image, but updates are still pushed to these newer devices through the Google Play Store. Isn't "Google Play services" app the same as the "Google Play" app? Another question I have, due to lack of documentation: what is the scope parameter for? The documentation just says the following, but not defining what an 'authentication scope' exactly is: scope String representing the authentication scope.

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  • Rails with Oracle often got "no listener" error

    - by qichunren
    I am on Rails 2.3.5 and use oracle 10 as my database,use oracle_adapter ,ruby-oci8 to connect oracle host. But I often got exception as the log info show: Completed in 463ms (View: 18, DB: 166) | 200 OK [http://192.168.30.128/auctions?page=1] /!\ FAILSAFE /!\ Mon Feb 01 19:02:11 +0800 2010 Status: 500 Internal Server Error ORA-12541: TNS:no listener env.c:257:in oci8lib.so /home/qichunren/.gem/ruby/1.8/gems/ruby-oci8-1.0.7/lib/oci8.rb:229:in `initialize' /home/qichunren/.gem/ruby/1.8/gems/activerecord-oracle-adapter-1.0.0.9250/lib/active_record/connection_adapters/oracle_adapter.rb:623:in `new' /home/qichunren/.gem/ruby/1.8/gems/activerecord-oracle-adapter-1.0.0.9250/lib/active_record/connection_adapters/oracle_adapter.rb:623:in `new_connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-oracle-adapter-1.0.0.9250/lib/active_record/connection_adapters/oracle_adapter.rb:659:in `initialize' /home/qichunren/.gem/ruby/1.8/gems/activerecord-oracle-adapter-1.0.0.9250/lib/active_record/connection_adapters/oracle_adapter.rb:35:in `new' /home/qichunren/.gem/ruby/1.8/gems/activerecord-oracle-adapter-1.0.0.9250/lib/active_record/connection_adapters/oracle_adapter.rb:35:in `oracle_connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:in `send' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:in `new_connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:245:in `checkout_new_connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:188:in `checkout' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in `loop' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in `checkout' /usr/local/ruby187/lib/ruby/1.8/monitor.rb:242:in `synchronize' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:183:in `checkout' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:98:in `connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:326:in `retrieve_connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:123:in `retrieve_connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:115:in `connection' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:9:in `cache' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:28:in `call' /home/qichunren/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/string_coercion.rb:25:in `call' /home/qichunren/.gem/ruby/1.8/gems/rack-1.0.1/lib/rack/head.rb:9:in `call' /home/qichunren/.gem/ruby/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb:24:in `call' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/params_parser.rb:15:in `call' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/session/cookie_store.rb:93:in `call' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/failsafe.rb:26:in `call' /home/qichunren/.gem/ruby/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call' /home/qichunren/.gem/ruby/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `synchronize' /home/qichunren/.gem/ruby/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:114:in `call' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/reloader.rb:34:in `run' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:108:in `call' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/cgi_process.rb:44:in `dispatch_cgi' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:101:in `dispatch_cgi' /home/qichunren/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:27:in `dispatch' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:76:in `process' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:74:in `synchronize' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:74:in `process' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:159:in `process_client' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:in `each' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:in `process_client' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `run' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `initialize' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `new' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `run' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in `initialize' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in `new' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in `run' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:282:in `run' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:281:in `each' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:281:in `run' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in `run' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/command.rb:212:in `run' /home/qichunren/.gem/ruby/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281 /home/qichunren/.gem/ruby/1.8/bin/mongrel_rails:19:in `load' /home/qichunren/.gem/ruby/1.8/bin/mongrel_rails:19 it seems that connection to oracle often disconnect.it show oracle error:ORA-12541: TNS:no listener How to fix this ? Many tks. oci8.c:270:in oci8lib.so: ORA-12541: TNS:no listener (OCIError) from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_oci_connection.rb:223:in new' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_oci_connection.rb:223:innew_connection' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_oci_connection.rb:328:in initialize' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_oci_connection.rb:24:innew' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_oci_connection.rb:24:in initialize' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_connection.rb:9:innew' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_connection.rb:9:in create' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-oracle_enhanced-adapter-1.2.4/lib/active_record/connec tion_adapters/oracle_enhanced_adapter.rb:50:inoracle_enhanced_connection' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/c onnection_specification.rb:291:in send' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/c onnection_specification.rb:291:inconnection=' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/c onnection_specification.rb:259:in retrieve_connection' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/c onnection_specification.rb:78:inconnection' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:2438:in quoted_table_ name' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:1259:infind_one' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:1250:in find_from_ids ' from /opt/ruby-enterprise-1.8.7/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:504:infind' from script/maintenance/adjust_settlement.rb:19

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  • Silverlight and Unexpected Font Sizes

    - by Eric J.
    Someone please teach me to fish here... I'm just learning Silverlight and have ran into a few situations where the font size actually used is drastically different than I would expect. There's probably something conceptual that I'm missing. Case A In one instance, I have defined a user control that presents a Label to show text. If one clicks on the label, the label (that is in a stack panel, in the user control) is replaced with a TextBox. When used at the top of a page (as in the example below with lblName) the label text is very small (around 8 points). When clicked on, the text box that replaces the label uses the specified fonts size. That same user control, used in different parts of the app, uses the same font for Label and TextBox. <Grid x:Name="LayoutRoot" Background="White"> <Grid.RowDefinitions> <RowDefinition Height="33" /> <RowDefinition Height="267*" /> </Grid.RowDefinitions> <StackPanel Height="Auto" HorizontalAlignment="Left" Name="stackPanel" VerticalAlignment="Top" Width="Auto" Grid.Row="1" /> <my:EditLabel Height="33" HorizontalAlignment="Left" x:Name="lblName" VerticalAlignment="Top" Width="Auto" FlexText="{Binding Name, Mode=TwoWay}" FontSize="20" MinHeight="24" /> </Grid> Case B I'm using the LiquidMenu.Menu control to pop up a menu when a button is pressed. The font looks huge compared to the rest of my page (maybe 36 points?). I tried forcing it to a very small by explicitly setting it to 8pt, but that had no effect. <Grid x:Name="LayoutRoot" Background="{x:Null}"> <StackPanel x:Name="labelStackPanel" Orientation="Horizontal"> <TextBlock Height="24" HorizontalAlignment="Left" Name="labelText" VerticalAlignment="Top" Width="200" Text="(Value Goes Here)" /> </StackPanel> <liquidMenu:Menu x:Name="popupMenu" Canvas.Left="40" Canvas.Top="40" ItemSelected="MenuList_ItemSelected" Visibility="Collapsed" Height="Auto" FontSize="8"> <liquidMenu:MenuItem ID="delete" Icon="Images/Delete10.png" Text="Delete" Shortcut="Del" /> <liquidMenu:MenuItem ID="exclusive" Icon="" Text="Exclusive" Shortcut="Ctrl+E" /> <liquidMenu:MenuItem ID="properties" Icon="" Text="Properties" Shortcut="Ctrl+P" /> </liquidMenu:Menu> </Grid> Answers to these specific issues are great, a new way to think about this type of issue so that I understand how to control font size is better.

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  • Wpf Combobox in Master/Detail MVVM

    - by isak
    I have MVVM master /details like this: <Window.Resources> <DataTemplate DataType="{x:Type model:EveryDay}"> <views:EveryDayView/> </DataTemplate> <DataTemplate DataType="{x:Type model:EveryMonth}"> <views:EveryMonthView/> </DataTemplate> </Window.Resources> <Grid> <ListBox Margin="12,24,0,35" Name="schedules" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=Elements}" SelectedItem="{Binding Path=CurrentElement}" DisplayMemberPath="Name" HorizontalAlignment="Left" Width="120"/> <ContentControl Margin="168,86,32,35" Name="contentControl1" Content="{Binding Path=CurrentElement.Schedule}" /> <ComboBox Height="23" Margin="188,24,51,0" Name="comboBox1" VerticalAlignment="Top" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=Schedules}" SelectedItem="{Binding Path=CurrentElement.Schedule}" DisplayMemberPath="Name" SelectedValuePath="ID" SelectedValue="{Binding Path=CurrentElement.Schedule.ID}" /> </Grid> This Window has DataContext class: public class MainViewModel : INotifyPropertyChanged { public MainViewModel() { _elements.Add(new Element("first", new EveryDay("First EveryDay object"))); _elements.Add(new Element("second", new EveryMonth("Every Month object"))); _elements.Add(new Element("third", new EveryDay("Second EveryDay object"))); _schedules.Add(new EveryDay()); _schedules.Add(new EveryMonth()); } private ObservableCollection<ScheduleBase> _schedules = new ObservableCollection<ScheduleBase>(); public ObservableCollection<ScheduleBase> Schedules { get { return _schedules; } set { _schedules = value; this.OnPropertyChanged("Schedules"); } } private Element _currentElement = null; public Element CurrentElement { get { return this._currentElement; } set { this._currentElement = value; this.OnPropertyChanged("CurrentElement"); } } private ObservableCollection<Element> _elements = new ObservableCollection<Element>(); public ObservableCollection<Element> Elements { get { return _elements; } set { _elements = value; this.OnPropertyChanged("Elements"); } } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } #endregion } One of Views: <UserControl x:Class="Views.EveryDayView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <Grid > <GroupBox Header="Every Day Data" Name="groupBox1" VerticalAlignment="Top"> <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch"> <TextBox Name="textBox2" Text="{Binding Path=AnyDayData}" /> </Grid> </GroupBox> </Grid> I have problem with SelectedItem in ComboBox.It doesn't works correctly.

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  • Sunrise / set calculations

    - by dassouki
    I'm trying to calculate the sunset / rise times using python based on the link provided below. My results done through excel and python do not match the real values. Any ideas on what I could be doing wrong? My Excel sheet can be found under .. http://transpotools.com/sun_time.xls # Created on 2010-03-28 # @author: dassouki # @source: [http://williams.best.vwh.net/sunrise_sunset_algorithm.htm][2] # @summary: this is based on the Nautical Almanac Office, United States Naval # Observatory. import math, sys class TimeOfDay(object): def calculate_time(self, in_day, in_month, in_year, lat, long, is_rise, utc_time_zone): # is_rise is a bool when it's true it indicates rise, # and if it's false it indicates setting time #set Zenith zenith = 96 # offical = 90 degrees 50' # civil = 96 degrees # nautical = 102 degrees # astronomical = 108 degrees #1- calculate the day of year n1 = math.floor( 275 * in_month / 9 ) n2 = math.floor( ( in_month + 9 ) / 12 ) n3 = ( 1 + math.floor( in_year - 4 * math.floor( in_year / 4 ) + 2 ) / 3 ) new_day = n1 - ( n2 * n3 ) + in_day - 30 print "new_day ", new_day #2- calculate rising / setting time if is_rise: rise_or_set_time = new_day + ( ( 6 - ( long / 15 ) ) / 24 ) else: rise_or_set_time = new_day + ( ( 18 - ( long/ 15 ) ) / 24 ) print "rise / set", rise_or_set_time #3- calculate sun mean anamoly sun_mean_anomaly = ( 0.9856 * rise_or_set_time ) - 3.289 print "sun mean anomaly", sun_mean_anomaly #4 calculate true longitude true_long = ( sun_mean_anomaly + ( 1.916 * math.sin( math.radians( sun_mean_anomaly ) ) ) + ( 0.020 * math.sin( 2 * math.radians( sun_mean_anomaly ) ) ) + 282.634 ) print "true long ", true_long # make sure true_long is within 0, 360 if true_long < 0: true_long = true_long + 360 elif true_long > 360: true_long = true_long - 360 else: true_long print "true long (360 if) ", true_long #5 calculate s_r_a (sun_right_ascenstion) s_r_a = math.degrees( math.atan( 0.91764 * math.tan( math.radians( true_long ) ) ) ) print "s_r_a is ", s_r_a #make sure it's between 0 and 360 if s_r_a < 0: s_r_a = s_r_a + 360 elif true_long > 360: s_r_a = s_r_a - 360 else: s_r_a print "s_r_a (modified) is ", s_r_a # s_r_a has to be in the same Quadrant as true_long true_long_quad = ( math.floor( true_long / 90 ) ) * 90 s_r_a_quad = ( math.floor( s_r_a / 90 ) ) * 90 s_r_a = s_r_a + ( true_long_quad - s_r_a_quad ) print "s_r_a (quadrant) is ", s_r_a # convert s_r_a to hours s_r_a = s_r_a / 15 print "s_r_a (to hours) is ", s_r_a #6- calculate sun diclanation in terms of cos and sin sin_declanation = 0.39782 * math.sin( math.radians ( true_long ) ) cos_declanation = math.cos( math.asin( sin_declanation ) ) print " sin/cos declanations ", sin_declanation, ", ", cos_declanation # sun local hour cos_hour = ( math.cos( math.radians( zenith ) ) - ( sin_declanation * math.sin( math.radians ( lat ) ) ) / ( cos_declanation * math.cos( math.radians ( lat ) ) ) ) print "cos_hour ", cos_hour # extreme north / south if cos_hour > 1: print "Sun Never Rises at this location on this date, exiting" # sys.exit() elif cos_hour < -1: print "Sun Never Sets at this location on this date, exiting" # sys.exit() print "cos_hour (2)", cos_hour #7- sun/set local time calculations if is_rise: sun_local_hour = ( 360 - math.degrees(math.acos( cos_hour ) ) ) / 15 else: sun_local_hour = math.degrees( math.acos( cos_hour ) ) / 15 print "sun local hour ", sun_local_hour sun_event_time = sun_local_hour + s_r_a - ( 0.06571 * rise_or_set_time ) - 6.622 print "sun event time ", sun_event_time #final result time_in_utc = sun_event_time - ( long / 15 ) + utc_time_zone return time_in_utc #test through main def main(): print "Time of day App " # test: fredericton, NB # answer: 7:34 am long = 66.6 lat = -45.9 utc_time = -4 d = 3 m = 3 y = 2010 is_rise = True tod = TimeOfDay() print "TOD is ", tod.calculate_time(d, m, y, lat, long, is_rise, utc_time) if __name__ == "__main__": main()

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  • EPPlus - .xlsx is locked for editing by 'another user'

    - by AdamTheITMan
    I have searched through every possible answer on SO for a solution, but nothing has worked. I am basically creating an excel file from a database and sending the results to the response stream using EPPlus(OpenXML). The following code gives me an error when trying to open my generated excel sheet "[report].xlsx is locked for editing by 'another user'." It will open fine the first time, but the second time it's locked. Dim columnData As New List(Of Integer) Dim rowHeaders As New List(Of String) Dim letter As String = "B" Dim x As Integer = 0 Dim trendBy = context.Session("TRENDBY").ToString() Dim dateHeaders As New List(Of String) dateHeaders = DirectCast(context.Session("DATEHEADERS"), List(Of String)) Dim DS As New DataSet DS = DirectCast(context.Session("DS"), DataSet) Using excelPackage As New OfficeOpenXml.ExcelPackage Dim excelWorksheet = excelPackage.Workbook.Worksheets.Add("Report") 'Add title to the top With excelWorksheet.Cells("B1") .Value = "Account Totals by " + If(trendBy = "Months", "Month", "Week") .Style.Font.Bold = True End With 'add date headers x = 2 'start with letter B (aka 2) For Each Header As String In dateHeaders With excelWorksheet.Cells(letter + "2") .Value = Header .Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Right .AutoFitColumns() End With x = x + 1 letter = Helper.GetColumnIndexToColumnLetter(x) Next 'Adds the descriptive row headings down the left side of excel sheet x = 0 For Each DC As DataColumn In DS.Tables(0).Columns If (x < DS.Tables(0).Columns.Count) Then rowHeaders.Add(DC.ColumnName) End If Next Dim range = excelWorksheet.Cells("A3:A30") range.LoadFromCollection(rowHeaders) 'Add the meat and potatoes of report x = 2 For Each dTable As DataTable In DS.Tables columnData.Clear() For Each DR As DataRow In dTable.Rows For Each item As Object In DR.ItemArray columnData.Add(item) Next Next letter = Helper.GetColumnIndexToColumnLetter(x) excelWorksheet.Cells(letter + "3").LoadFromCollection(columnData) With excelWorksheet.Cells(letter + "3") .Formula = "=SUM(" + letter + "4:" + letter + "6)" .Style.Font.Bold = True .Style.Font.Size = 12 End With With excelWorksheet.Cells(letter + "7") .Formula = "=SUM(" + letter + "8:" + letter + "11)" .Style.Font.Bold = True .Style.Font.Size = 12 End With With excelWorksheet.Cells(letter + "12") .Style.Font.Bold = True .Style.Font.Size = 12 End With With excelWorksheet.Cells(letter + "13") .Formula = "=SUM(" + letter + "14:" + letter + "20)" .Style.Font.Bold = True .Style.Font.Size = 12 End With With excelWorksheet.Cells(letter + "21") .Formula = "=SUM(" + letter + "22:" + letter + "23)" .Style.Font.Bold = True .Style.Font.Size = 12 End With With excelWorksheet.Cells(letter + "24") .Formula = "=SUM(" + letter + "25:" + letter + "26)" .Style.Font.Bold = True .Style.Font.Size = 12 End With With excelWorksheet.Cells(letter + "27") .Formula = "=SUM(" + letter + "28:" + letter + "29)" .Style.Font.Bold = True .Style.Font.Size = 12 End With With excelWorksheet.Cells(letter + "30") .Formula = "=SUM(" + letter + "3," + letter + "7," + letter + "12," + letter + "13," + letter + "21," + letter + "24," + letter + "27)" .Style.Font.Bold = True .Style.Font.Size = 12 End With x = x + 1 Next range.AutoFitColumns() 'send it to response Using stream As New MemoryStream(excelPackage.GetAsByteArray()) context.Response.Clear() context.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" context.Response.AddHeader("content-disposition", "attachment; filename=filetest.xlsx") context.Response.OutputStream.Write(stream.ToArray(), 0, stream.ToArray().Length) context.Response.Flush() context.Response.Close() End Using End Using

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  • Oauth Logout using facebook graph api

    - by Sam
    Hi, I just made a website where i'm authorizing the users using the oauth2.0 and graph api. I also want to user logout from my website and facebook site,when they click on the logout button. I'm unable to find a solution for this last 24 hours.My code is in asp.net. Thanks in Advacnce

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  • iPhone 3DES encryption key length issue

    - by Russell Hill
    Hi, I have been banging my head on a wall with this one. I need to code my iPhone application to encrypt a 4 digit "pin" using 3DES in ECB mode for transmission to a webservice which I believe is written in .NET. + (NSData *)TripleDESEncryptWithKey:(NSString *)key dataToEncrypt:(NSData*)encryptData { NSLog(@"kCCKeySize3DES=%d", kCCKeySize3DES); char keyBuffer[kCCKeySize3DES+1]; // room for terminator (unused) bzero( keyBuffer, sizeof(keyBuffer) ); // fill with zeroes (for padding) [key getCString: keyBuffer maxLength: sizeof(keyBuffer) encoding: NSUTF8StringEncoding]; // encrypts in-place, since this is a mutable data object size_t numBytesEncrypted = 0; size_t returnLength = ([encryptData length] + kCCBlockSize3DES) & ~(kCCBlockSize3DES - 1); // NSMutableData* returnBuffer = [NSMutableData dataWithLength:returnLength]; char* returnBuffer = malloc(returnLength * sizeof(uint8_t) ); CCCryptorStatus ccStatus = CCCrypt(kCCEncrypt, kCCAlgorithm3DES , kCCOptionECBMode, keyBuffer, kCCKeySize3DES, nil, [encryptData bytes], [encryptData length], returnBuffer, returnLength, &numBytesEncrypted); if (ccStatus == kCCParamError) NSLog(@"PARAM ERROR"); else if (ccStatus == kCCBufferTooSmall) NSLog(@"BUFFER TOO SMALL"); else if (ccStatus == kCCMemoryFailure) NSLog(@"MEMORY FAILURE"); else if (ccStatus == kCCAlignmentError) NSLog(@"ALIGNMENT"); else if (ccStatus == kCCDecodeError) NSLog(@"DECODE ERROR"); else if (ccStatus == kCCUnimplemented) NSLog(@"UNIMPLEMENTED"); if(ccStatus == kCCSuccess) { NSLog(@"TripleDESEncryptWithKey encrypted: %@", [NSData dataWithBytes:returnBuffer length:numBytesEncrypted]); return [NSData dataWithBytes:returnBuffer length:numBytesEncrypted]; } else return nil; } } I do get a value encrypted using the above code, however it does not match the value from the .NET web service. I believe the issue is that the encryption key I have been supplied by the web service developers is 48 characters long. I see that the iPhone SDK constant "kCCKeySize3DES" is 24. So I SUSPECT, but don't know, that the commoncrypto API call is only using the first 24 characters of the supplied key. Is this correct? Is there ANY way I can get this to generate the correct encrypted pin? I have output the data bytes from the encryption PRIOR to base64 encoding it and have attempted to match this against those generated from the .NET code (with the help of a .NET developer who sent the byte array output to me). Neither the non-base64 encoded byte array nor the final base64 encoded strings match.

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  • Unit of Measurement for Duration Column in Sql Profiler

    - by Mubashar Ahmad
    What is the Unit of Duration column in SQL Profiler? i thought it is milliseconds but in following profiler row i found it contradicting with start and end time spid=163 duration=11310646 starttime=2010-04-06 17:45:24.480 endtime=2010-04-06 17:45:35.790 reads=152 writes=2 cpu=16 eventclass=12 textdata= DELETE FROM dbo.[Icon] WHERE Id = 20087

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  • Calculating timespan with t-sql

    - by jdiaz
    Given two date/times: @start_date = '2009-04-15 10:24:00.000' @end_date = '2009-04-16 19:43:01.000' Is it possible to calculate the time elapsed between the two dates in the following format 1d 9h 19m

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