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Is Javascript a Functional Programming Language?
...ipt has got a control flow and is conceptualized as a imperative language. From its design objective, it is clearly not a functional language.
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Comparing two dictionaries and checking how many (key, value) pairs are equal
...n't allow truthy comparisons (unless it has a length of 1) as they inherit from numpy.ndarray. -credit to stackoverflow.com/a/33307396/994076
– Daniel Myers
May 10 '17 at 1:00
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How to get the first line of a file in a bash script?
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head takes the first lines from a file, and the -n parameter can be used to specify how many lines should be extracted:
line=$(head -n 1 filename)
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Assign output to variable in Bash
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Same with something more complex...getting the ec2 instance region from within the instance.
INSTANCE_REGION=$(curl -s 'http://169.254.169.254/latest/dynamic/instance-identity/document' | python -c "import sys, json; print json.load(sys.stdin)['region']")
echo $INSTANCE_REGION
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ProcessBuilder: Forwarding stdout and stderr of started processes without blocking the main thread
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From the moment, the InputStream has ended, it will end too.
– asgoth
Jan 4 '13 at 22:03
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Java 8: Lambda-Streams, Filter by Method with Exception
...ow my chair out the window. "What? Where did that checked exception leak from?" This is the first legit use case for sneaky throw I have seen yet. As a programmer you have to be vigilant about indicating sneaky throw is possible. Maybe better is just to create another stream interface/impl that...
Is C++ context-free or context-sensitive?
...iguation rules (6.8, 7.1, 10.2) must be applied to distinguish expressions from declarations. Further, access control, ambiguity, and type rules must be used to weed out syntactically valid but meaningless constructs.
Finally, here's the promised program. Line 21 is syntactically correct if and on...
What happens when a duplicate key is put into a HashMap?
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Thanks from me as well! I did have to add a "remove" method to it to perform the same functionality as a normal Map but worked great!
– JGlass
Oct 16 '18 at 17:20
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Best practice for embedding arbitrary JSON in the DOM?
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Thank you. The quote from the spec has convinced me.
– Ben Lee
Feb 16 '12 at 23:25
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Why does !{}[true] evaluate to true in JavaScript?
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Because
{}[true]
evaluates to undefined, and !undefined is true.
From @schlingel:
true is used as key and {} as hash map. There doesn't exist an property with the key true so it returns undefined. Not undefined is true, as expected.
Console session (Node.js [0.10.17]):
> {}[true]
und...