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List comprehension: Returning two (or more) items for each item
...>>> list(chain.from_iterable((f(x), g(x)) for x in range(3)))
[2, 0, 3, 1, 4, 4]
Timings:
from timeit import timeit
f = lambda x: x + 2
g = lambda x: x ** 2
def fg(x):
yield f(x)
yield g(x)
print timeit(stmt='list(chain.from_iterable((f(x), g(x)) for x in range(3)))',
...
JavaScript: What are .extend and .prototype used for?
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edited Oct 19 '15 at 0:04
modeeb
42144 silver badges1616 bronze badges
answered Sep 23 '10 at 18:27...
git rebase, keeping track of 'local' and 'remote'
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edited Jul 20 '17 at 11:24
answered Jun 16 '10 at 9:37
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Simulate delayed and dropped packets on Linux
...lay to all packets going out of the local Ethernet.
# tc qdisc add dev eth0 root netem delay 100ms
Now a simple ping test to host on the local network should show an increase of 100 milliseconds. The delay is limited by the clock resolution of the kernel (Hz). On most 2.4 systems, the system ...
Random Number Between 2 Double Numbers
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Yes.
Random.NextDouble returns a double between 0 and 1. You then multiply that by the range you need to go into (difference between maximum and minimum) and then add that to the base (minimum).
public double GetRandomNumber(double minimum, double maximum)
{
Random ...
How to access command line arguments of the caller inside a function?
...n g; argv
f
}
f boo bar baz
g goo gar gaz
Save in f.sh
$ ./f.sh arg0 arg1 arg2
f boo bar baz
farg2 arg1 arg0
g goo gar gaz
garg2 arg1 arg0
f
farg2 arg1 arg0
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Private virtual method in C++
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answered Jan 31 '10 at 5:42
Prasoon SauravPrasoon Saurav
83.1k4242 gold badges229229 silver badges336336 bronze badges
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
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10 Answers
10
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How to paginate with Mongoose in Node.js?
...from a .find() call? I would like a functionality comparable to "LIMIT 50,100" in SQL.
31 Answers
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What is a patch in git version control?
...es you want to communicate and apply to another repo)
(picture from the 2008 blog post "Bioruby with git: how would that work?", published by Jan AERTS)
See also Contributing to Rails with Git as another concrete example.
Nowadays, the GitHub pull request makes it really easy to apply patches on...