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What's the strangest corner case you've seen in C# or .NET? [closed]

I collect a few corner cases and brain teasers and would always like to hear more. The page only really covers C# language bits and bobs, but I also find core .NET things interesting too. For example, here's one which isn't on the page, but which I find incredible: ...
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When & why to use delegates? [duplicate]

...dely used in events declaration, but when should I use them in my own code and why are they useful? why not to use something else? ...
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How do I update pip itself from inside my virtual environment?

...ng to pip --version , I currently have pip 1.1 installed in my virtualenv and I want to update to the latest version. 16 ...
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How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'

...d on every page refresh by a user to keep track of which pages they are on and their last access date to the site. I then have a cron that runs every 15 minutes to DELETE old records. ...
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How to pass boolean values to a PowerShell script from a command prompt

...rArgumentTransformationError,f Instead of using -File you could try -Command, which will evaluate the call as script: CMD> powershell.exe -NoProfile -Command .\RunScript.ps1 -Turn 1 -Unify $false Turn: 1 Unify: False As David suggests, using a switch argument would also be more idiomatic, si...
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Check if OneToOneField is None in Django

...elect_related() now or in the future -- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere -- you have to extend the test as follows: if hasattr(object, 'onetoonerevrelattr') and object.onetoonerevrelattr != None – class stacker ...
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Reset/remove CSS styles for element only

... the spec. The initial keyword has broad browser support except for the IE and Opera Mini families. Since IE's lack of support may cause issue here are some of the ways you can reset some CSS properties to their initial values: .reset-this { animation : none; animation-delay : 0; anima...
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How do I “source” something in my .vimrc file?

I've been working on expanding my vim-foo lately and I've run across a couple of plugins ( autotag.vim for example) that require them to be "sourced" in my .vimrc file. What exactly does this mean and how do I do it? ...
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How to copy directories in OS X 10.7.3?

...cp -R <sourcedir>/ <destdir> The above only copies the files and their directories inside of sourcedir. Typically, you want to include the directory you're copying, so drop the trailing slash: cp -R <sourcedir> <destdir> ...
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How to increase storage for Android Emulator? (INSTALL_FAILED_INSUFFICIENT_STORAGE)

... Update This answer is, as I write this, nearly eight years old, and about five years stale. But it's still (as I write this) the "accepted" answer, because it answered the question when it was asked. The newer answer, that applies to the newer Android Studio tools, can be found here: htt...