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How to use sed/grep to extract text between two words?
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answered Nov 6 '12 at 0:14
Brian CampbellBrian Campbe...
What is the !! (not not) operator in JavaScript?
...f two exclamation points, like so: !! . Can someone please tell me what this operator does?
36 Answers
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Why does modern Perl avoid UTF-8 by default?
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Set your PERL_UNICODE envariable to AS. This makes all Perl scripts decode @ARGV as UTF‑8 strings, and sets the encoding of all three of stdin, stdout, and stderr to UTF‑8. Both these are global effects, not lexical ones.
At the top of your source file (program, ...
In Python how should I test if a variable is None, True or False
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Don't fear the Exception! Having your program just log and continue is as easy as:
try:
result = simulate(open("myfile"))
except SimulationException as sim_exc:
print "error parsing stream", sim_exc
else:
if result:
print "result pass"
else:
print "result fail...
What are the rules for evaluation order in Java?
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Let me say this very clearly, because people misunderstand this all the time:
Order of evaluation of subexpressions is independent of both associativity and precedence. Associativity and precedence determine in what order the operators a...
Difference between add(), replace(), and addToBackStack()
What is the main difference between calling these methods:
9 Answers
9
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Checking if an object is a given type in Swift
I have an array that is made up of AnyObject . I want to iterate over it, and find all elements that are array instances.
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What is the difference between tree depth and height?
This is a simple question from algorithms theory.
The difference between them is that in one case you count number of nodes and in other number of edges on the shortest path between root and concrete node.
Which is which?
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What is a mutex?
A mutex is a programming concept that is frequently used to solve multi-threading problems. My question to the community:
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