大约有 46,000 项符合查询结果（耗时：0.0651秒） [XML]
How can I determine the direction of a jQuery scroll event?
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704
Check current scrollTop vs previous scrollTop
var lastScrollTop = 0;
$(window).scroll(functio...
In PHP what does it mean by a function being binary-safe?
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106
It means the function will work correctly when you pass it arbitrary binary data (i.e. strings ...
How to open a specific port such as 9090 in Google Compute Engine
I have 2 Google Compute Engine instances and I want to open port 9090 in both the instances. I think we need to add some firewall rules.
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How to compare two strings in dot separated version format in Bash?
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204
Here is a pure Bash version that doesn't require any external utilities:
#!/bin/bash
vercomp (...
Python 3 turn range to a list
I'm trying to make a list with numbers 1-1000 in it. Obviously this would be annoying to write/read, so I'm attempting to make a list with a range in it. In Python 2 it seems that:
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What is the equivalent of “!=” in Excel VBA?
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answered Jul 21 '12 at 20:57
SteveSteve
198k1717 gold badges197197 silver badges251251 bronze badges
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Purpose of asterisk before a CSS property
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answered Nov 6 '09 at 21:44
Waleed AmjadWaleed Amjad
6,43233 gold badges3030 silver badges3333 bronze badges
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Plot two histograms on single chart with matplotlib
...umpy
from matplotlib import pyplot
x = [random.gauss(3,1) for _ in range(400)]
y = [random.gauss(4,2) for _ in range(400)]
bins = numpy.linspace(-10, 10, 100)
pyplot.hist(x, bins, alpha=0.5, label='x')
pyplot.hist(y, bins, alpha=0.5, label='y')
pyplot.legend(loc='upper right')
pyplot.show()
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Get the first N elements of an array?
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370
Use array_slice()
This is an example from the PHP manual: array_slice
$input = array("a", "...