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Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...你把他的源码下下来编译后，你会发现解释器居然不到200k，这是多么地变态啊（/bin/sh都要1M，MacOS平台），而且能和C语言非常好的互动。我很好奇得浏览了一下Lua解释器的源码，这可能是我看过最干净的C的源码了。
我不想写...
Using try vs if in python
... faster if exceptions really are exceptional. If result is None more than 50 % of the time, then using if is probably better.
To support this with a few measurements:
>>> import timeit
>>> timeit.timeit(setup="a=1;b=1", stmt="a/b") # no error checking
0.06379691968322732
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How to go up a level in the src path of a URL in HTML?
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lonesomedaylonesomeday
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How can I know when an EditText loses focus?
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edited Mar 30 '16 at 6:14
Mann
50033 silver badges1313 bronze badges
answered May 16 '12 a...
Escape single quote character for use in an SQLite query
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user4157124
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answered Mar 2 '09 at 19:14
Ryan GuillRyan Guill
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Is generator.next() visible in Python 3?
...t() was one of the few exceptions to that rule. This was fixed in Python 3.0. [*]
But instead of calling g.__next__(), use next(g).
[*] There are other special attributes that have gotten this fix; func_name, is now __name__, etc.
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PostgreSQL LIKE query performance variations
...to a particular table in my database. Sometimes I will get results within 200-400 ms (very acceptable) but other times it might take as much as 30 seconds to return results.
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Failed binder transaction when putting an bitmap dynamically in a widget
..., w, h, true);
return photo;
}
Choose newHeight to be small enough (~100 for every square it should take on the screen) and use it for your widget, and your problem will be solved :)
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im...
How to write an XPath query to match two attributes?
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answered Jan 5 '10 at 21:37
Brian AgnewBrian Agnew
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Changing the color of the axis, ticks and labels for a plot in matplotlib
...yplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(10))
ax.set_xlabel('X-axis')
ax.set_ylabel('Y-axis')
ax.spines['bottom'].set_color('red')
ax.spines['top'].set_color('red')
ax.xaxis.label.set_color('red')
ax.tick_params(axis='x', colors='red')
plt.show()
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