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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
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91
The order of evaluation of subexpressions, including
the arguments of a function call and
ope...
What is a “cache-friendly” code?
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91
Optimizing cache usage largely comes down to two factors.
Locality of Reference
The first facto...
Controlling fps with requestAnimationFrame?
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Hydroper
2,91833 gold badges1818 silver badges4848 bronze badges
answered Nov 4 '13 at 16:25
markEmarkE
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What is referential transparency?
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91
A referentially transparent function is one which only depends on its input.
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Cartesian product of x and y array points into single array of 2D points
...d. dev. of 7 runs, 100 loops each)
cartesian_product_transpose:
7.87 ms ± 91.5 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
cartesian_product_itertools:
518 ms ± 5.5 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
In [6]: test_cartesian(*(x50 * 4))
cartesian_product:
169 ms ...
What is the copy-and-swap idiom?
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Tony DelroyTony Delroy
91k1010 gold badges149149 silver badges219219 bronze badges
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Getting the closest string match
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91
This problem turns up all the time in bioinformatics. The accepted answer above (which was grea...
Why does Java switch on contiguous ints appear to run faster with added cases?
...00000024f017b: cmp edx,0x1
0x00000000024f017e: jg 0x00000000024f0191
0x00000000024f0180: test edx,edx
0x00000000024f0182: je 0x00000000024f01cb
0x00000000024f0184: mov ebp,edx
0x00000000024f0186: mov edx,0x17
0x00000000024f018b: call 0x00000000024c90a0 ; OopMap{off=...
Usage of __slots__?
...d
>>> min(timeit.repeat(get_set_delete_fn(slotted)))
0.2846834529991611
>>> min(timeit.repeat(get_set_delete_fn(not_slotted)))
0.3664822799983085
The slotted access is almost 30% faster in Python 3.5 on Ubuntu.
>>> 0.3664822799983085 / 0.2846834529991611
1.287332565828434...
JavaScript + Unicode regexes
...5\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0...