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How can I add an item to a IEnumerable collection?

My question as title above. For example, 15 Answers 15 ...
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Anyone else find naming classes and methods one of the most difficult parts in programming? [closed]

...uest help documentation from a vendor through a web service. I try to name it DocumentRetriever , VendorDocRequester , DocGetter , but they just don't sound right. I ended up browsing through dictionary.com for half an hour trying to come up with an adequate word. ...
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How to generate Class Diagram (UML) on Android Studio (IntelliJ Idea)

... I found a free plugin that can generate class diagrams with android studio. It's called SimpleUML. Update Android Studio 2.2+: To install the plugin, follow steps in this answer: https://stackoverflow.com/a/36823007/1245894 Older version of Android Studio On Mac: go to Android S...
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pip installing in global site-packages instead of virtualenv

...ackage in a virtualenv causes the package to be installed in the global site-packages folder instead of the one in the virtualenv folder. Here's how I set up Python3 and virtualenv on OS X Mavericks (10.9.1): ...
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Command line to remove an environment variable from the OS level configuration

...e variable from the user environment (which is the default place setx puts it): REG delete HKCU\Environment /F /V FOOBAR If the variable is set in the system environment (e.g. if you originally set it with setx /M), as an administrator run: REG delete "HKLM\SYSTEM\CurrentControlSet\Control\Sessi...
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When is layoutSubviews called?

... I had a similar question, but wasn't satisfied with the answer (or any I could find on the net), so I tried it in practice and here is what I got: init does not cause layoutSubviews to be called (duh) addSubview: causes layoutSubviews to be called on the view being adde...
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Why is #!/usr/bin/env bash superior to #!/bin/bash?

I've seen in a number of places, including recommendations on this site ( What is the preferred Bash shebang? ), to use #!/usr/bin/env bash in preference to #!/bin/bash . I've even seen one enterprising individual suggest using #!/bin/bash was wrong and bash functionality would be lost by doing...
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What is the use of the ArraySegment class?

...egment<T> has become a lot more useful in .NET 4.5+ and .NET Core as it now implements: IList<T> ICollection<T> IEnumerable<T> IEnumerable IReadOnlyList<T> IReadOnlyCollection<T> as opposed to the .NET 4 version which implemented no interfaces whatsoever. The...
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How can I break up this long line in Python?

...ow would you go about formatting a long line such as this? I'd like to get it to no more than 80 characters wide: 5 Answers...
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Are there disadvantages to using a generic varchar(255) for all text-based fields?

...elds will ever come close to having 255 characters. (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCHAR(255) by default and I never bothered to override it). ...