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How to display a dynamically allocated array in the Visual Studio debugger?
... arrays (CArray, CStringArray, ...)
following the next link in its Tip #4
http://www.codeproject.com/Articles/469416/10-More-Visual-Studio-Debugging-Tips-for-Native-De
For example for "CArray pArray", add in the Watch windows
pArray.m_pData,5
to see the first 5 elements .
If pArray is a ...
How to limit the maximum value of a numeric field in a Django model?
...
You could also create a custom model field type - see http://docs.djangoproject.com/en/dev/howto/custom-model-fields/#howto-custom-model-fields
In this case, you could 'inherit' from the built-in IntegerField and override its validation logic.
The more I think about this, I re...
How does lock work exactly?
...pends on the way you lock. You can find a good list of optimizations here: http://www.thinkingparallel.com/2007/07/31/10-ways-to-reduce-lock-contention-in-threaded-programs/
Basically you should try to lock as little as possible, since it puts your waiting code to sleep. If you have some heavy calc...
Why a function checking if a string is empty always returns true? [closed]
...rray)
* var $var; (a variable declared, but without a value in a class)
http://www.php.net/empty
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MySQL, update multiple tables with one query
...n just send this one query, of course. You can read more about joins here: http://dev.mysql.com/doc/refman/5.0/en/join.html. There's also a couple restrictions for ordering and limiting on multiple table updates you can read about here: http://dev.mysql.com/doc/refman/5.0/en/update.html (just ctrl+f...
What does the question mark in Java generics' type parameter mean?
...is used to define wildcards. Checkout the Oracle documentation about them: http://docs.oracle.com/javase/tutorial/java/generics/wildcards.html
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Java 256-bit AES Password-Based Encryption
...must also install them (not compiled in) so beware.
* see here: http://www.javamex.com/tutorials/cryptography/unrestricted_policy_files.shtml
*/
KeySpec spec = new PBEKeySpec (mPassword.toCharArray (), mSalt, ITERATIONS, KEYLEN_BITS);
tmp = factory.generateSecret ...
How to get current path with query string using Capybara
... parsing involved.
I have made a pull request to add this to Capybara at: https://github.com/jnicklas/capybara/pull/1405
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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
...as an argument keeps a copy in the local scope, which affects performance: http://jsperf.com/short-scope. All accesses to window will now have to travel one level less up the scope chain. As with undefined, a local copy again allows for more aggressive minification.
Sidenote:
Though this may not...
Why doesn't nodelist have forEach?
...as an Array in combination with Array.prototype.concat.
There was a bug in Google's Closure Library which caused almost all Google's apps to fail due to this. The library was updated as soon as this was found but there might still be code out there that makes the same incorrect assumption in combina...