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What does the star operator mean, in a function call?
...m(a, b, c, d):
return a + b + c + d
values1 = (1, 2)
values2 = { 'c': 10, 'd': 15 }
s = sum(*values1, **values2)
will execute as:
s = sum(1, 2, c=10, d=15)
Also see section 4.7.4 - Unpacking Argument Lists of the Python documentation.
Additionally yo...
ExecutorService that interrupts tasks after a timeout
...ble(){
public void run(){
handler.cancel();
}
}, 10000, TimeUnit.MILLISECONDS);
This will execute your handler (main functionality to be interrupted) for 10 seconds, then will cancel (i.e. interrupt) that specific task.
...
How to override to_json in Rails?
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answered Apr 4 '10 at 15:23
Jonathan JulianJonathan Julian
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WWW or not WWW, what to choose as primary site name? [closed]
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edited Jul 10 '09 at 13:09
answered Jul 10 '09 at 12:56
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Windows batch: call more than one command in a FOR loop?
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edited Jan 21 '14 at 10:08
Steven
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answered ...
Return array in a function
...e able to use it just like you would a normal array:
int main()
{
int y[10];
int *a = fillarr(y);
cout << a[0] << endl;
}
share
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improve this answer
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fo...
What to do about a 11000 lines C++ source file?
So we have this huge (is 11000 lines huge?) mainmodule.cpp source file in our project and every time I have to touch it I cringe.
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Creating a zero-filled pandas data frame
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Testing this I find %timeit temp = np.zeros((10, 11)); d = pd.DataFrame(temp, columns = ['col1', 'col2',...'col11']) takes 156 us. But %timeit d = pd.DataFrame(0, index = np.arange(10), columns = ['col1', 'col2',...'col11']) takes 171 us. I'm surprised it's not any fast...
Convert a RGB Color Value to a Hexadecimal String
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answered Aug 31 '10 at 9:59
mhshamsmhshams
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Is it safe to ignore the possibility of SHA collisions in practice?
...than 2n/2). For instance, with SHA-256 (n=256) and one billion messages (p=109) then the probability is about 4.3*10-60.
A mass-murderer space rock happens about once every 30 million years on average. This leads to a probability of such an event occurring in the next second to about 10-15. That's ...