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Appending to an existing string
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You can use << to append to a string in-place.
s = "foo"
old_id = s.object_id
s <<...
Git fatal: Reference has invalid format: 'refs/heads/master
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make a backup of your repo if you aren't sure about this one, because these commands are irrev...
Zoom in on a point (using scale and translate)
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Python data structure sort list alphabetically
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241
[] denotes a list, () denotes a tuple and {} denotes a dictionary. You should take a look at the...
What does “abstract over” mean?
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In algebra, as in everyday concept formation, abstractions are formed by grouping things by so...
Array include any value from another array?
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edited Jan 18 at 6:58
answered Oct 15 '10 at 11:55
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Why are these constructs using pre and post-increment undefined behavior?
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iPhone: How to get current milliseconds?
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Linux find file names with given string
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195
Use the find command,
find . -type f -name "*John*"
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counting number of directories in a specific directory
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