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• Variable declarations in header files - static or not?

  - by Rob

  When refactoring away some #defines I came across declarations similar to the following in a C++ header file: static const unsigned int VAL = 42; const unsigned int ANOTHER_VAL = 37; The question is, what difference, if any, will the static make? Note that multiple inclusion of the headers isn't possible due to the classic #ifndef HEADER #define HEADER #endif trick (if that matters). Does the static mean only one copy of VAL is created, in case the header is included by more than one source file?

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• how to handle "unknown error" in perl module compilation

  - by Haiyuan Zhang

  when I try to use a "third part module" in my perl script, I got some error message like "unknown error, compilation failed in require at ... line xxx" nothing else and the line mentioned in the error message is exact the same line I "use the module"... my question is: are there any good practice to handle this situation? like a list to check or something else. thanks in advance.

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• rails backgroundjob running jobs in parallel?

  - by Damir Horvat

  I'm very happy with By so far, only I have this one issue: When one process takes 1 or 2 hours to complete, all other jobs in the queue seem to wait for that one job to finish. Worse still is when uploading to a server which time's out regularly. My question: is Bj running jobs in parallel or one after another? Thank you, Damir

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• FLEX components: updating import statements to move the component into another folder

  - by Patrick

  hi, I've just imported a Flex component into my project. I have a theory question about importing. all the imports statements in the component source files started with "com.subFolder.etc", but I have preferred to move the component folders into "componentName" and to replace all import statements as "componentName.com.subFolder.etc" Is this ok ? Everything works perfectly, but I was wondering if the method is correct. thanks

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• mySQL - One large query vs Ajax indivdual queries

  - by Mark

  Hi guys, I guess no one will have a definative answer to this but considered predictions would be appriciated. I am in the process of developing a mySQL database for a web application and my question is: Is it more efficient to make a single query that returns a single row using AJAX or To request 100 - 700 rows when the user will likely only ever use the results of two or three? Really I am asking what is heavier for the server 2-3 requests with one result or 1 request with 100 - 700 results? Thanks, Mark

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• XmlDocument filter nodes by datetime string

  - by Eatdoku

  Trying to apply filter / attribute comparison in the Xmldocument. Obviously , the following code snippet wouldn't work because the expression can't be converted using number() function. (according to the answer of my other question). I'm wondering if there is a way to do the DateTime string comparison in XmlDoc. XmlNodeList test = x2PathDoc.SelectNodes("//Config /Entity [@TargetDateTime> '2010-12-19T03:25:00-08:00']");

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• Android: SensorManager, "The Handler the sensor events will be delivered to."

  - by Aidan

  Hi Guys, I know this is a newbie question but I'm implementing a SensorEventListener and I was reading the SDK for the parameters that registerListener needs and one of them is a Handler that "The Handler the sensor events will be delivered to.". I'm unsure what exactly this is, could someone provide an example? Thanks,

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• How does Content-Aware fill work?

  - by CiscoIPPhone

  The upcoming version of Photoshop a feature called Content-Aware fill. This feature will fill a selection of an image based on the surrounding image - to the point it can generate bushes and clouds while being seamless with the surrounding image. See http://www.youtube.com/watch?v=NH0aEp1oDOI for a preview of the Photoshop feature I'm talking about. My question is: How does this feature work algorithmically?

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• Using Javascript, How do I bring an already existing open window to the front on top of other window

  - by user268249

  The question was fairly descriptive but I'll describe it further. Basically, I have Window1, clicking a button link opens window2. Clicking a button in window2 opens window3, clicking a button in window3 should bring window2 back to the front of the screen on top of window2. I'm not sure how this is exactly done, however I have used and played around with focus(), opener and other various methods and I cannot seem to get it to work properly. Thanks for any help in advance!

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• Identify the implicit cast and explicit cast

  - by user292489

  Hello there, I would appreciate it if anyone can answer my question. Identify the implicit cast and explicit cast? int a = 2, b = 3; float f = 2.5; double d = -1.2; int int_result; float real_result;

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• How can I expose a 3rd party's enum through my asmx?

  - by Jim G.

  Given: An asmx web service. A 3rd party dll that contains a useful enum. Question: How can I expose this enum through my web service without having to repeat myself and re-type the enum's members in my webservice's public class?

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• Detecting own posts on Facebook from a Chrome extension perspective

  - by Bane

  I want to create a Chrome extension that will automatically like every post I make on Facebook. My question is, how can I detect when I post something, and if that post if mine? Is there an event that occurs or something? (And just for the record, I know that these sorts of things are impossible when other apps post on my behalf, at least from an extension perspective. So I'm only concentrating on posts that I actually click the "post" button, or enter for, myself.)

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• How to adding a toolbar (like google traslate) to a webpage opened through a link for saving/process

  - by arunas_t

  Hello, lets say I have bunch of hyperlinks. When link is clicked, I'd like an opened page (in a separate window) to have a google-translator style toolbox that I could use to save the page to a localdisk if I liked it, adding a few tags to the database using php. I understand how to save a file using php, but could You help me with ideas as how to add a toolbar and to send request from toolbar to my processing page? Here's graphic representation of my question.

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• Is there a way to iterate over all open windows in Mac OS X?

  - by Alex

  When you unplug an external monitor with a higher resolution that your macbook from your laptop, the windows mostly retain their width, but their size gets clipped to the (smaller) height of the macbook screen. When you plug the monitor back in, their size remains frustratingly small. My question is: is there any way that I can iterate over all open windows, save their size, and restore them once the monitor gets plugged in again?

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• handling bluetooth spp pairing request thru app

  - by Mr. Kakakuwa Bird

  Hi My android application is in blueotooth SPP server mode and listening for client devices, my application knows the passcode required for pairing of that devices. My question is, Is it possible to handle pairing request through application. Thanks and Regards.

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• Using an ampersand in scanf()

  - by Rob

  When I compile scanf("%s", &var);, gcc sends back a warning: warning: format ‘%s’ expects type ‘char *’, but argument 2 has type ‘char (*)[20]’ however when I compile scanf("%s", var);, no warning is applied. Both pieces of code work and the book I am reading specifically says to use the ampersand, but even it doesn't in some of the examples. My question is, should I continue to use the ampersand, even when the book doesn't specify?

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• how write this in verbatim latex

  - by voodoomsr

  hi, i have a little question about the verbatim environment in latex..... my problem is how can i write "\end{verbatim}" inside of a verbatim environment, it supposed that everything inside a verbatim is written just like it looks but this is the string to end the environment, so how can i do this?

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• Where can I find the list of all SQL-standard-mandated aggregate functions? [on hold]

  - by einpoklum

  I know that different DBMSes support different aggregate functions; for example: MySQL's aggregates Oracle's aggregates I want to get the list of aggregates mandated by the SQL standard. Or, to be more precise, the lists of mandatory aggregates for SQL 1992, 1998, 2003, 2008 and 2011 - with 2011 being the most important to me. Edit: Of course if I buy a copy of the standards I could compile these lists myself. My question is whether they're accessible somewhere online.

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• Expert R users, what's in your .Rprofile?...

  - by gappy

  This question is maybe a little too cute, but I have always found startup profile files of other people both useful and instructive about the language. Moreover, while I have some customization for bash and vim, I have nothing for R. For example, one thing I always wanted is different colors for input and output text in a window terminal, and maybe even syntax highlighting.

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• Jar Store - prevent from copying

  - by Vladimir

  We are going to create Jar Store the way like App Store works, but for Java Developers. Everyone will able to submit and sell custom .jar library which solves some little problem, but solves it very good to save other developer's work time. The only undecided question is how to prevent .jar copying or publishing bought .jar to the Net.

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• How to terminate a running process in matlab ?

  - by ZaZu

  Hi there, I have a pretty simple question, how can I terminate a running script in matlab using a code ? Similar to using CTRL + C I want the program to stop running if a user enters incorrect digits Any ideas ? Thanks

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• Hide the Emacs echo area when not in use

  - by Baldur

  The echo area is the line at the bottom of Emacs below the mode line: ~ ~ | | +-----------------------+ |-U:--- mode-line | +-----------------------+ | M-x echo-area | +-----------------------+ Now the mode line is highly customizable while the echo area is more rigid (and unused a lot of the time). The question is pretty simple: is it possible to hide the echo area during inactivity and redisplay it once it needs your attention: ~ ~ ~ ~ | | | | | | +-----------------------+ | | |-U:--- mode-line | +-----------------------+ +-----------------------+ |-U:--- mode-line | | M-x echo-area | +-----------------------+ +-----------------------+ Inactive Active This is similar to the way Google Chrome displays URLs when you hover your mose over a link and the Firefox addon Pentadactyl where the command-line is hidden by default.

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• nant nantcontrib configuration to use fxcop

  - by Qutbuddin Kamaal

  hi guys, i have question related fxcop i need to run fxcop attribute which i have implemented in nant build file. i have nant and nantcontrib . i have copied content of nantcontrib\bin to nant\bin folder i have set environment variable to FxCopCmd.exe then also i'm gettin' error when i run nant script : unknown target (fxcop)

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• MyFaces vs. Sun's Reference Implementation - latter not free?

  - by erlord

  Hi all Just a stupid beginner's question, which will be quickly solved, but I am curious. http://www.irian.at/myfacesexamples/home.jsf says: "MyFaces - The free JavaServer™ Faces Implementation" Errr ... is Sun's implementation not free, then? Thanks & Cheers Er

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• How to call custom JDialog built with Netbeans GUI editor?

  - by Raptrex

  Yesterday I asked this question: Is this possible to make as an option dialog? and I learned it could be made with JDialog. I'm using Netbeans GUI editor and made a button that will call my custom JDialog I designed in the GUI editor. The JDialog is called jDialog1. How do I call the jDialog1 with the button? private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: }

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