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multiprocessing.Pool: When to use apply, apply_async or map?
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How to use Swift @autoclosure
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Warif Akhand Rishi
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answered Jun 8 '14 at 5:28
eddie_ceddie_c
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os.path.dirname(__file__) returns empty
... Sven MarnachSven Marnach
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3
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How to check whether a variable is a class or not?
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348
Even better: use the inspect.isclass function.
>>> import inspect
>>> class...
How to find out the number of CPUs using python
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Anthony Sottile
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answered Jun 17 '09 at 10:53
Nadia AlramliN...
How can I create a two dimensional array in JavaScript?
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var items = [
[1, 2],
[3, 4],
[5, 6]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 3
console.log(items[1][1]); // 4
console.log(items);
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Value of type 'T' cannot be converted to
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293
Even though it's inside of an if block, the compiler doesn't know that T is string.
Therefore, i...
Generate a heatmap in MatPlotLib using a scatter data set
...matplotlib.pyplot as plt
# Generate some test data
x = np.random.randn(8873)
y = np.random.randn(8873)
heatmap, xedges, yedges = np.histogram2d(x, y, bins=50)
extent = [xedges[0], xedges[-1], yedges[0], yedges[-1]]
plt.clf()
plt.imshow(heatmap.T, extent=extent, origin='lower')
plt.show()
This m...
How can I multiply and divide using only bit shifting and adding?
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answered May 5 '10 at 22:31
Andrew ToulouseAndrew Toulouse
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__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...nt(const char *format,...) __attribute__((format(printf,1,2)));
//m=2；n=3
extern void myprint(int l，const char *format,...)
__attribute__((format(printf,2,3)));
需要特别注意的是，如果myprint是一个函数的成员函数，那么m和n的值可有点“悬乎”了，例如：
//...