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How to run a command in the background and get no output?
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8 Answers
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Efficient way to rotate a list in python
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287
A collections.deque is optimized for pulling and pushing on both ends. They even have a dedicat...
while (1) Vs. for (;;) Is there a speed difference?
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218
In perl, they result in the same opcodes:
$ perl -MO=Concise -e 'for(;;) { print "foo\n" }'
a ...
MySQL select where column is not empty
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282
Compare value of phone2 with empty string:
select phone, phone2
from jewishyellow.users
wher...
Combine two data frames by rows (rbind) when they have different sets of columns
... Jyotirmoy BhattacharyaJyotirmoy Bhattacharya
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What are the correct link options to use std::thread in GCC under linux?
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Earth Engine
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answered Dec 27 '11 at 22:24
hmjdhmjd
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Sass - Converting Hex to RGBa for background opacity
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edited Jan 23 '19 at 13:18
Daniel Werner
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answered Jun 7 '12 a...
Difference between git pull and git pull --rebase
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338
git pull = git fetch + git merge against tracking upstream branch
git pull --rebase = git fetch...
How can I count the number of matches for a regex?
...for Java 9+
long matches = matcher.results().count();
Solution for Java 8 and older
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
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