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performSelector may cause a leak because its selector is unknown

...for the C function pointer for the method corresponding to the controller. All NSObjects respond to methodForSelector:, but you can also use class_getMethodImplementation in the Objective-C runtime (useful if you only have a protocol reference, like id<SomeProto>). These function pointers are ...
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jQuery Ajax calls and the Html.AntiForgeryToken()

...gt;<%= Html.AntiForgeryToken()%></form> Then in your ajax call do (edited to match your second example) $.ajax({ type: "post", dataType: "html", url: $(this).attr("rel"), data: AddAntiForgeryToken({ id: parseInt($(this).attr("title")) }), success: function (respo...
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angular.service vs angular.factory

... myInjectedFactory can be an object, a function reference, or any value at all. For example, if you wrote a service to create a constructor (as in the last example above), it would have to be instantiated like so: var myShinyNewObject = new myInjectedService.myFunction() which is arguably less desi...
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How do I filter query objects by date range in Django?

...year='2011', date__month='01') Edit As Bernhard Vallant said, if you want a queryset which excludes the specified range ends you should consider his solution, which utilizes gt/lt (greater-than/less-than). ...
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Reset C int array to zero : the fastest way?

... long long int or unsigned long long int, what is the fastest way to reset all its content to zero (not only for initialization but to reset the content several times in my program)? Maybe with memset? ...
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What to put in a python module docstring? [closed]

...ngs; the module's own docstring should describe them very summarily (if at all) and rather concentrate on a concise summary of what the module as a whole can do for you, ideally with some doctested examples (just like functions and classes ideally should have doctested examples in their docstrings)....
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Python Process Pool non-daemonic?

...to create a python Pool that is non-daemonic? I want a pool to be able to call a function that has another pool inside. 8 A...
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What does Python's eval() do?

...less until you find a need for it. It is used on sites like codepad.org to allow you to execute scripts in a test environment. eval() can also be used to execute highly-dynamic code, but you should make yourself fully aware of the security and performance risks before using it. ...
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Spring JPA selecting specific columns

I am using Spring JPA to perform all database operations. However I don't know how to select specific columns from a table in Spring JPA? ...
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Declaring variables inside or outside of a loop

... The scope of local variables should always be the smallest possible. In your example I presume str is not used outside of the while loop, otherwise you would not be asking the question, because declaring it inside the while loop would not be an option, since it would not comp...