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What is the difference between an expression and a statement in Python?
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Expressions only contain identifiers, literals and operators, where operators include arithmetic and boolean operators, the function call operator () the subscription operator [] and similar, and can be reduced to some kind of "value", which can be any Python obje...
Add an already existing directory to a directory in Solution Explorer
...but whenever I right-click on the directory and select Add => Existing Item , I can only add individual files, but not directories.
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IllegalArgumentException or NullPointerException for a null parameter? [closed]
...appropriate for this particular property. I have always been torn in this situation: should I throw an IllegalArgumentException , or a NullPointerException ? From the javadocs, both seem appropriate. Is there some kind of an understood standard? Or is this just one of those things that you should...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
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Select the class's symbol in its header file - i.e. the bit just after @interface. Then the refactoring stuff should be enabled.
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Navigation in django
I've just done my first little webapp in django and I love it. I'm about to start on converting an old production PHP site into django and as part its template, there is a navigation bar.
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How can I view all historical changes to a file in SVN
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There's no built-in command for it, so I usually just do something like this:
#!/bin/bash
# history_of_file
#
# Outputs the full history of a given file as a sequence of
# logentry/diff pairs. The first revision of the file is emitted as
# full text sinc...
Elements order in a “for (… in …)” loop
...ements in the order they are declared? Is there a browser which doesn't do it in order?
The object I wish to use will be declared once and will never be modified.
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Best approach for GPGPU/CUDA/OpenCL in Java?
General-purpose computing on graphics processing units ( GPGPU ) is a very attractive concept to harness the power of the GPU for any kind of computing.
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How ViewBag in ASP.NET MVC works
How does the ASP.NET MVC's ViewBag work? MSDN says it is just an Object , which intrigues me, how does "Magic" properties such as ViewBag.Foo and magic strings ViewBag["Hello"] actually work?
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URL encoding the space character: + or %20?
When is a space in a URL encoded to + , and when is it encoded to %20 ?
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