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How do I set environment variables from Java?

How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder . I have several subprocesses to start, though, so I'd rather modify the current process's environment and let the subprocesses inherit it. ...
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Adding System.Web.Script reference in class library

I am currently moving code from my app_code folder to a class library. I have tagged several methods with [System.Web.Script.Serialization.ScriptIgnore] attributes. My class library cannot see this namespace. My add references dialog cannot see this namespace. How do I properly use this tag fr...
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How to get all enum values in Java?

...ame across this problem that I without knowing the actual enum type I need to iterate its possible values. 7 Answers ...
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C++ convert vector to vector

What is a good clean way to convert a std::vector<int> intVec to std::vector<double> doubleVec . Or, more generally, to convert two vectors of convertible types? ...
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Transpose a data frame

I need to transpose a large data frame and so I used: 4 Answers 4 ...
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Keep only first n characters in a string?

Is there a way in JavaScript to remove the end of a string? 7 Answers 7 ...
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How can I use Server.MapPath() from global.asax?

I need to use Server.MapPath() to combine some files path that I store in the web.config . 4 Answers ...
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Android Closing Activity Programmatically

...ress the back button, the activity goes out of view. How can this be called from inside an activity so that it closes itself. ...
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How to expand/collapse a diff sections in Vimdiff?

I've started using vimdiff today, and wanted to do some of the things that I've taken for granted on Windows based diff editors (like expand/collapse a diff section, have full file expansion/only diffs with 3 context lines above or below, etc.). I currently know only the following commands : ...
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Add column with number of days between dates in DataFrame pandas

I want to subtract dates in 'A' from dates in 'B' and add a new column with the difference. 4 Answers ...