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Truncate a list to a given number of elements
What method truncates a list--for example to the first 100 elements--discarding the others (without iterating through individual elements)?
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In Python, what is the difference between “.append()” and “+= []”?
...ase the only difference is performance: append is twice as fast.
Python 3.0 (r30:67507, Dec 3 2008, 20:14:27) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import timeit
>>> timeit.Timer('s.append("something")', 's...
How to atomically delete keys matching a pattern using Redis
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Starting with redis 2.6.0, you can run lua scripts, which execute atomically. I have never written one, but I think it would look something like this
EVAL "return redis.call('del', unpack(redis.call('keys', ARGV[1])))" 0 prefix:[YOUR_PREFIX e.g del...
What is the best way to do a substring in a batch file?
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401
Well, for just getting the filename of your batch the easiest way would be to just use %~n0.
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python numpy ValueError: operands could not be broadcast together with shapes
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user2357112 supports Monica
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answered Jul 3 '14 at 22:08
DrVDrV
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AWK: Access captured group from line pattern
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answered Jun 2 '10 at 12:50
Peter TillemansPeter Tillemans
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Stack smashing detected
...ollowing snippet:
#include <stdio.h>
void func()
{
char array[10];
gets(array);
}
int main(int argc, char **argv)
{
func();
}
The compiler, (in this case gcc) adds protection variables (called canaries) which have known values. An input string of size greater than 10 causes co...
How can I catch a ctrl-c event?
...r;
sigemptyset(&sigIntHandler.sa_mask);
sigIntHandler.sa_flags = 0;
sigaction(SIGINT, &sigIntHandler, NULL);
pause();
return 0;
}
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Decimal separator comma (',') with numberDecimal inputType in EditText
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105
A workaround (until Google fix this bug) is to use an EditText with android:inputType="numberDe...