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What's better at freeing memory with PHP: unset() or $var = null
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VonCVonC
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Difference between jQuery `click`, `bind`, `live`, `delegate`, `trigger` and `on` functions (with an
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answered Jun 2 '10 at 4:09
Nick Craver♦Nick Craver
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What is tail recursion?
...function that adds the first N natural numbers. (e.g. sum(5) = 1 + 2 + 3 + 4 + 5 = 15).
Here is a simple JavaScript implementation that uses recursion:
function recsum(x) {
if (x === 1) {
return x;
} else {
return x + recsum(x - 1);
}
}
If you called recsum(5), this i...
Unexpected results when working with very big integers on interpreted languages
...supports arbitrary precision. It will produce the correct answer on 32 or 64 bit platforms.
This can be seen by raising 2 to a power far greater than the bit width of the platform:
>>> 2**99
633825300114114700748351602688L
You can demonstrate (with Python) that the erroneous values you...
Shuffling a list of objects
...] for i in range(10)]
shuffle(x)
# print(x) gives [[9], [2], [7], [0], [4], [5], [3], [1], [8], [6]]
# of course your results will vary
Note that shuffle works in place, and returns None.
share
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Checking the equality of two slices
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answered Mar 9 '13 at 14:58
Stephen WeinbergStephen Weinberg
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How to squash commits in git after they have been pushed?
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Squash commits locally with
git rebase -i origin/master~4 master
and then force push with
git push origin +master
Difference between --force and +
From the documentation of git push:
Note that --force applies to all the refs that are pushed, hence using
it with pus...
Use of def, val, and var in scala
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edited Apr 17 '11 at 4:46
Ying
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answered Dec 14 '10 at 15:...
Syntax behind sorted(key=lambda: …)
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edited Oct 24 '14 at 14:06
Gaurang Tandon
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How to query SOLR for empty fields?
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145
Try this:
?q=-id:["" TO *]
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