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Most efficient way to make the first character of a String lower case?
... Mode Cnt Score Error Units
MyBenchmark.test1 thrpt 20 10463220.493 ± 288805.068 ops/s
MyBenchmark.test2 thrpt 20 14730158.709 ± 530444.444 ops/s
MyBenchmark.test3 thrpt 20 16079551.751 ± 56884.357 ops/s
MyBenchmark.test4 thrpt 20 9762578.446 ± 584316.582 ...
jQuery select all except first
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$("div.test:not(:first)").hide();
or:
$("div.test:not(:eq(0))").hide();
or:
$("div.test").not(":eq(0)").hide();
or:
$("div.test:gt(0)").hide();
or: (as per @Jordan Lev's comment):
$("div.test").slice(1).hide();
and so on.
See:
http://api.jquery.com/first-selector/
http...
How to express infinity in Ruby?
...y 1.8.6, 1.8.7, and 1.9.2 you have Float.infinite?.
PositiveInfinity = +1.0/0.0
=> Infinity
NegativeInfinity = -1.0/0.0
=> -Infinity
CompleteInfinity = NegativeInfinity..PositiveInfinity
=> -Infinity..Infinity
*I've verified this in Ruby 1.8.6 and 1.9.2
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Ruby: Merging variables in to a string
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answered Feb 16 '09 at 21:42
Mike WoodhouseMike Woodhouse
47.6k1212 gold badges8585 silver badges123123 bronze badges
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Random row selection in Pandas dataframe
...me(x, n):
return x.ix[random.sample(x.index, n)]
Note: As of Pandas v0.20.0, ix has been deprecated in favour of loc for label based indexing.
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Time complexity of Sieve of Eratosthenes algorithm
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answered Apr 6 '10 at 5:17
ShreevatsaRShreevatsaR
34.9k1515 gold badges9595 silver badges117117 bronze badges
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How to get a substring of text?
I have text with length ~700. How do I get only ~30 of its first characters?
5 Answers
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Iterating Through a Dictionary in Swift
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360
Dictionaries in Swift (and other languages) are not ordered. When you iterate through the dictio...
Get contentEditable caret index position
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10 Answers
10
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In Matlab, when is it optimal to use bsxfun?
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+500
There are three reasons I use bsxfun (documentation, blog link)
bsxfun is faster than repmat (see below)
bsxfun requires less typin...