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Is there a way to iterate over a range of integers?
...on version of the for loop (i.e. you can do a lot more with it, the syntax from the OP is only good for that more restricted case of a number range, so in any language you're going to want this extended version) and it sufficiently accomplishes the same task, and isn't remarkably different anyway, s...
How does python numpy.where() work?
...hape as condition, or broadcastable to such shape!), it will return values from x when condition is True otherwise from y. So this makes where more versatile and enables it to be used more often. Thanks
– eat
Apr 13 '11 at 7:53
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Get OS-level system information
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You can get some limited memory information from the Runtime class. It really isn't exactly what you are looking for, but I thought I would provide it for the sake of completeness. Here is a small example. Edit: You can also get disk usage information from the java.io....
How can you sort an array without mutating the original array?
...nst sorted = [...arr].sort();
the spread-syntax as array literal (copied from mdn):
var arr = [1, 2, 3];
var arr2 = [...arr]; // like arr.slice()
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator
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Utilizing multi core for tar+gzip/bzip compression/decompression
...ession of files that haven't also
been compressed with threading enabled. From man for version 5.2.2:
Threaded decompression hasn't been implemented yet. It will only work
on files that contain multiple blocks with size information in
block headers. All files compressed in multi-thr...
Simple way to create matrix of random numbers
... Create an array of the given shape and propagate it with random
samples from a uniform distribution over [0, 1).
>>> import numpy as np
>>> np.random.rand(2,3)
array([[ 0.22568268, 0.0053246 , 0.41282024],
[ 0.68824936, 0.68086462, 0.6854153 ]])
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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
...pent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer management does give an order of magnitude improvement.
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Sorting a set of values [closed]
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From a comment:
I want to sort each set.
That's easy. For any set s (or anything else iterable), sorted(s) returns a list of the elements of s in sorted order:
>>> s = set(['0.000000000', '0.009518000', '10.27...
What would cause an algorithm to have O(log n) complexity?
...e you see an O(log n) algorithm... where on earth does that logarithm come from? However, it turns out that there's several different ways that you can get a log term to show up in big-O notation. Here are a few:
Repeatedly dividing by a constant
Take any number n; say, 16. How many times can y...
How do I use disk caching in Picasso?
...tBerde: Thanks for the quick note but I figured out the image is coming up from memory only if the App is running in background (when on offline). if I close the app, that is clear the running apps then open my app again the images don't load from Cache. I have set the error default loading image th...