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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 ...
Why is a round-trip conversion via a string not safe for a double?
...(0xba43b74000000000),
/*12*/ I64(0xe8d4a51000000000),
/*13*/ I64(0x9184e72a00000000),
/*14*/ I64(0xb5e620f480000000),
/*15*/ I64(0xe35fa931a0000000),
// powers of 0.1
/*1*/ I64(0xcccccccccccccccd),
/*2*/ I64(0xa3d70a3d70a3d70b),
/*3*/ I64(0x83126e978d4fdf3c),
/*4...
What is the copy-and-swap idiom?
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Tony DelroyTony Delroy
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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...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...不能肯定最好的做法，第45条介绍了如何执行一次恰当的搜索来找到特定的元素。
2. 为将要被修改的元素做一份拷贝，。在map和multimap的情况下，请记住，不要把该拷贝的第一个部分声明为const。毕竟，你想要改变它。
3. 修改...
Twitter image encoding challenge [closed]
...hree more points I can put in the data). And when using ASCII, it gives me 917.64 bits instead of 840.
I decided against a method for the initial image computation that would have required heavy weaponry (corner detection, feature extraction, colour quantisation...) because I wasn't sure at first i...
地图组件（高德地图） · App Inventor 2 中文网
... 开通VIP 搜索 地图组件（高德地图）
地图组件（高德地图）
地图（基础容器，默认“高德地图...
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...