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Why does .NET foreach loop throw NullRefException when collection is null?
So I frequently run into this situation... where Do.Something(...) returns a null collection, like so:
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How to close Android application?
I want to close my application, so that it no longer runs in the background.
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Locate current file in IntelliJ
... Ctrl + Alt + L ). What is the name of the operation (so I can define it in the keymap)
12 Answers
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Assign variable value inside if-statement [duplicate]
I was wondering whether it is possible to assign a variable a value inside a conditional operator like so:
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Framework vs. Toolkit vs. Library [duplicate]
What is the difference between a Framework, a Toolkit and a Library?
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How do you Encrypt and Decrypt a PHP String?
...rs to this question made this mistake; as do many cryptography libraries written in PHP.
You should avoid implementing your own cryptography, and instead use a secure library written by and reviewed by cryptography experts.
Update: PHP 7.2 now provides libsodium! For best security, update your syst...
What is the difference between iterator and iterable and how to use them?
I am new in Java and I'm really confused with iterator and iterable. Can anyone explain to me and give some examples?
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“To Do” list before publishing Android app to market [closed]
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Hope it's not too late, here is some advice:
Launch your app at the end of the week (Thursday afternoon is usually a good time). Why so? Well, no companies would like to publish an app only 1.5 day before the week end -> too ...
How to set the margin or padding as percentage of height of parent container?
...ide another, and in the inner div, use something like top:50% (remember position matters if it still doesn't work)
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Does a `+` in a URL scheme/host/path represent a space?
...ed, but
any + characters in the path component is expected to be treated literally.
To be explicit: + is only a special character in the query component.
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