大约有 2,900 项符合查询结果（耗时：0.0159秒） [XML]
How can I run an external command asynchronously from Python?
... edited Jan 15 at 9:28
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
answered Jul 6 '10 at 14:30
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What's the correct way to convert bytes to a hex string in Python 3?
...ed Oct 24 '19 at 13:11
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
answered Mar 22 '16 at 8:07
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Android - How To Override the “Back” button so it doesn't Finish() my Activity?
...eral, though, I agree: avoid overriding.
– Matt Briançon
May 9 '11 at 7:17
4
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Printf width specifier to maintain precision of floating-point value
... in:
#include <float.h>
int Digs = DECIMAL_DIG;
double OneSeventh = 1.0/7.0;
printf("%.*e\n", Digs, OneSeventh);
// 1.428571428571428492127e-01
But let's dig deeper ...
Mathematically, the answer is "0.142857 142857 142857 ...", but we are using finite precision floating point numbers.
L...
Histogram using gnuplot?
...n(x,width)=width*floor(x/width)
plot 'datafile' using (bin($1,binwidth)):(1.0) smooth freq with boxes
check out help smooth freq to see why the above makes a histogram
to deal with ranges just set the xrange variable.
sha...
What is the fastest way to get the value of π?
... loop_ a_n b_n t_n p_n (i - 1)
in
let a,b,t,p = loop_ (1.0) (1.0 /. (sqrt 2.0)) (1.0/.4.0) (1.0) iters in
(a +. b) *. (a +. b) /. (4.0 *. t)
Lastly, how about some pi golf (800 digits)? 160 characters!
int a=10000,b,c=2800,d,e,f[2801],g;main(){for(;b-c;)f[b++]=a/5;for(;d=0...
Determine on iPhone if user has enabled push notifications
...ted May 4 '19 at 13:51
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
answered Mar 27 '12 at 22:28
...
Android - Back button in the title bar
In many apps (Calendar, Drive, Play Store) when you tap a button and enter a new activity, the icon in the title bar turns into a back button, but for the app I am making, it doesn't do that. How do I make that icon take you back to the previous screen?
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What are the effects of exceptions on performance in Java?
...performances are not a concern...
– Jean-Baptiste Yunès
Aug 4 '17 at 15:45
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show 4 more comments
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0.1 float is greater than 0.1 double. I expected it to be false [duplicate]
...?\n"; //← you might end up here when x == y!!
}
}
int main()
{
foo(1.0, 1.0);
return 0;
}
See Why is cos(x) != cos(y) even though x == y? for more info.
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