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In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?

... your functions in it to MyFunctions.psm1 (you've just created a module!). Now for a module to load properly, you have to do some specific things with the file. First for Import-Module to see the module (you use this cmdlet to load the module into the shell), it has to be in a specific location. The...
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Nullable Foreign Key bad practice?

Let's say you have a table Orders with a foreign key to a Customer Id. Now, suppose you want to add an Order without a Customer Id, (whether that should be possible is another question) you would have to make the foreign key NULL... Is that bad practice or would you rather work with a link table bet...
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How do I check OS with a preprocessor directive?

I need my code to do different things based on the operating system on which it gets compiled. I'm looking for something like this: ...
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Purpose of Python's __repr__

What is the significance/purpose of this method? 7 Answers 7 ...
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Fancybox doesn't work with jQuery v1.9.0 [ f.browser is undefined / Cannot read property 'msie' ]

...s patched. UPDATE (Jan 16, 2013): Fancybox v2.1.4 has been released and now it works fine with jQuery v1.9.0. For fancybox v1.3.4- you still need to rollback to jQuery v1.8.3 or apply the migration script as pointed out by @Manu's answer. UPDATE (Jan 17, 2013): Workaround for users of Fancyb...
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filename and line number of python script

... @gsinha: Every function call has performance impact. You have to measure if this impact is acceptable for you. – omikron Nov 9 '15 at 14:45 ...
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How to implement a good __hash__ function in python [duplicate]

... same value for objects that are equal. It also shouldn't change over the lifetime of the object; generally you only implement it for immutable objects. A trivial implementation would be to just return 0. This is always correct, but performs badly. Your solution, returning the hash of a tuple of p...
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iOS 5 Best Practice (Release/retain?)

...per-file basis. See pixelfreak's answer. So, my advice still stands, but now the 3rd-party libraries shouldn't need to be updated to work with ARC. Here's what Apple says about opting out of ARC for specific files: When you migrate a project to use ARC, the -fobjc-arc compiler flag is set a...
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How exactly does the callstack work?

...s stored in the EBP register. The offsets, on the other hand, are clearly known at compile time and are therefore hardcoded into the machine code. This graphic from Wikipedia shows what the typical call stack is structured like1: Add the offset of a variable we want to access to the address cont...
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How to create a new branch from a tag?

... same name. In this, and in similar scenarios, the important thing is to know: branches and tags are actually single-line text files in .git/refs directory, and we can reference them explicitly using their pathes below .git. Branches are called here "heads", to make our life more simple. Thus, ref...