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Convert a number range to another range, maintaining ratio
...ll relative to the other one (not exactly sure, but if there's more than a 1000000 factor difference between the size of the ranges, make sure that it actually behaves like you expect... or learn about floating point inaccuracy)
– jerryjvl
May 30 '09 at 6:39
...
How to append to a file in Node?
...Example with appendFile:
console.log(new Date().toISOString());
[...Array(10000)].forEach( function (item,index) {
fs.appendFile("append.txt", index+ "\n", function (err) {
if (err) console.log(err);
});
});
console.log(new Date().toISOString());
Up to 8000 on my computer, you can...
Create an empty list in python with certain size
...>> from timeit import timeit
>>> timeit("[None]*100",number=10000)
0.023542165756225586
>>> timeit("[None for _ in xrange(100)]",number=10000)
0.07616496086120605
But if you are ok with a range (e.g. [0,1,2,3,...,x-1]), then range(x) might be fastest:
>>> timeit("...
Create numpy matrix filled with NaNs
...n -mtimeit "import numpy as np; a = np.empty((100,100));" "a.fill(np.nan)"
10000 loops, best of 3: 54.3 usec per loop
$ python -mtimeit "import numpy as np; a = np.empty((100,100));" "a[:] = np.nan"
10000 loops, best of 3: 88.8 usec per loop
The timings show a preference for ndarray.fill(..) as t...
How do I format a long integer as a string without separator in Java?
...rmat fmt = new MessageFormat("{0,choice,0#zero!|1#one!|1<{0,number,'#'}|10000<big: {0}}");
int[] nums = new int[] {
0,
1,
100,
1000,
10000,
100000,
1000000,
10000000
};
Object[] a = ne...
How to automatically reload a page after a given period of inactivity
...dow.location.reload(true);
else
setTimeout(refresh, 10000);
}
setTimeout(refresh, 10000);
</script>
share
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improve this answer
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fol...
Detect if a NumPy array contains at least one non-numeric value?
...ny()
Edit: 30x faster:
import timeit
s = 'import numpy;a = numpy.arange(10000.).reshape((100,100));a[10,10]=numpy.nan'
ms = [
'numpy.isnan(a).any()',
'any(numpy.isnan(x) for x in a.flatten())']
for m in ms:
print " %.2f s" % timeit.Timer(m, s).timeit(1000), m
Results:
0.11 s num...
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...气已经提前笼罩了南方小城。夜里8点，张赢一个人待在酒店的房间里，开着空调，可还是感觉窒息，为了赶走缠绕在心口的阴郁，烟一包接着一包，似乎也无济于事。
他想了很久该怎么向一个人开口，请他离职。那是爱鲜蜂的...
Creating Unicode character from its number
...to be absolutely sure ahead of time that your value of c is smaller than 0x10000, or else this approach will break horribly.
– David Given
Mar 13 '12 at 22:29
1
...
Play audio from a stream using C#
...el.Text), (int)timeout));
playThread.IsBackground = true;
playThread.Start(10000);
Terminate with:
if (waiting)
stop.Set();
Notice that I'm using the ParameterizedThreadDelegate in the code above, and the thread is started with playThread.Start(10000);. The 10000 represents a maximum of 10 ...