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How do I delete an exported environment variable?

... but this only works for a session, what about unsetting it definitely? or maybe searching where is the variable set, so you can go and delete it? – eLRuLL Apr 19 '14 at 15:35 ...
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Proper way to make HTML nested list?

... list example prefixed by DEPRECATED EXAMPLE: , but they never corrected it with a non-deprecated example, nor explained exactly what is wrong with the example. ...
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How to determine if a type implements an interface with C# reflection

....GetInterfaces().Contains(typeof(IMyInterface)) For a generic interface, it’s a bit different. typeof(MyType).GetInterfaces().Any(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IMyInterface<>)) ...
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Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]

... Almost certainly, your reuse identifier "title" is incorrect. We can see from the UITableView.h method signature of dequeueReusableCellWithIdentifier that the return type is an Implicitly Unwrapped Optional: func dequeueReusableCellWithIdentifier(identifier: String...
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ActiveRecord.find(array_of_ids), preserving order

...only There is a function in mysql called FIELD() Here is how you could use it in .find(): >> ids = [100, 1, 6] => [100, 1, 6] >> WordDocument.find(ids).collect(&:id) => [1, 6, 100] >> WordDocument.find(ids, :order => "field(id, #{ids.join(',')})") => [100, 1, 6] ...
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make div's height expand with its content

...ion still gets a fair amount of traffic, so I wanted to update the answer with a modern alternative using a new layout mode in CSS3 called Flexible boxes or Flexbox: body { margin: 0; } .flex-container { display: flex; flex-direction: column; min-height: 100vh; } header { ...
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Is it possible to include one CSS file in another?

Is it possible to include one CSS file in another? 17 Answers 17 ...
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Can I delete a git commit but keep the changes?

...e. Before I was able to complete the features I was working on, I had to switch my current branch to master to demo some features. But just using a "git checkout master" preserved the changes I also made in my development branch, thus breaking some of the functionality in master. So what I did was c...
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How to convert a currency string to a double with jQuery or Javascript?

I have a text box that will have a currency string in it that I then need to convert that string to a double to perform some operations on it. ...
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How to name factory like methods?

I guess that most factory-like methods start with create . But why are they called " create "? Why not " make ", " produce ", " build ", " generate " or something else? Is it only a matter of taste? A convention? Or is there a special meaning in "create"? ...