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Capturing Ctrl-c in ruby
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133
The problem is that when a Ruby program ends, it does so by raising SystemExit. When a control...
Check if class already assigned before adding
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edited Aug 24 '15 at 13:07
Robert Koritnik
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What command means “do nothing” in a conditional in Bash?
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3 Answers
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Active
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Passing a 2D array to a C++ function
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edited Feb 25 '15 at 18:38
Peter Mortensen
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How to move a file?
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Nicolas Gervais
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answered Jan 13 '12 at 22:19
ig0774ig0774
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Python hashable dicts
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answered Jul 20 '09 at 4:30
UnknownUnknown
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Change the Right Margin of a View Programmatically?
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answered Dec 17 '10 at 16:30
Kevin CoppockKevin Coppock
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What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
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237
Braces ($var vs. ${var})
In most cases, $var and ${var} are the same:
var=foo
echo $var
# foo...