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Difference between wait and sleep
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wait is a BASH built-in command. From man bash:
wait [n ...]
Wait for each specified process and return its termination sta-
tus. Each n may be a process ID or a job specification; if a
job spec is given, all processes ...
When is a CDATA section necessary within a script tag?
...<" and "&" as control characters.' To prevent the JavaScript engine from interpreting the "<![CDATA[" and "]]>" marks, you can wrap them in comments.
If your script does not contain any "<" or "&", you don't need a CDATA section anyway.
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What does [nyae] mean in Zsh?
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From An Introduction to the Z Shell:
If you press y when the shell asks you if you want to correct a word, it will be corrected. If you press n, it will be left alone. Pressing a aborts the command, and pressing e brings ...
Magic number in boost::hash_combine
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Take a look at the DDJ article by Bob Jenkins from 1997. The magic constant ("golden ratio") is explained as follows:
The golden ratio really is an arbitrary value. Its purpose is to avoid mapping all zeros to all zeros.
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Style child element when hover on parent
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This answer would benefit from some explanation. It seems to me that there is more code here than there needs to be and its not clear at which part of the code we should be focusing.
– Paul Rooney
Jan 30 '18 at 4...
Argmax of numpy array returning non-flat indices
...ime to build the result of ==, and a third time to extract the True values from this result. Note that there might be more than one item equal to the maximum.
– Sven Marnach
Feb 28 '12 at 14:40
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Testing javascript with Mocha - how can I use console.log to debug a test?
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Use the debug lib.
import debug from 'debug'
const log = debug('server');
Use it:
log('holi')
then run:
DEBUG=server npm test
And that's it!
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jQuery load more data on scroll
...ocument).height() - $(window).height()) {
// ajax call get data from server and append to the div
}
});
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What's the best way to detect a 'touch screen' device using JavaScript?
...ows 8 even though my screen has no touch sensors. I upgraded my old laptop from Windows 7 to Windows 8.
– Pwner
Nov 26 '12 at 23:30
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.NET List Concat vs AddRange
... content of an existing list use AddRange.
If you are creating a new list from two IEnumerable sources then use Concat with .ToList. This has the quality that it does not mutate either of sources.
If you only ever need to enumerate the contents of two Lists (or any other IEnumerable) then simply ...