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setting an environment variable in virtualenv
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How to tell whether a point is to the right or left side of a line
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How to add edge labels in Graphviz?
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Send email with PHPMailer - embed image in body
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How to revert initial git commit?
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Piping buffer to external command in Vim
...t; /dev/stdout" -cq! /etc/hosts
It's useful for scripting purposes.
For more command-line tricks, check:
How to write whole buffer to standard output from the command line?
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Font Awesome icon inside text input element
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Is JavaScript a pass-by-reference or pass-by-value language?
...(which immediately goes out of scope when the function exits). It becomes more apparent what's happening if you name the function params things like numf, obj1f, and obj2f. Then you see that the params were hiding the external var names.
– jinglesthula
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How to run test methods in specific order in JUnit4?
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