大约有 42,000 项符合查询结果(耗时:0.0317秒) [XML]

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How to check if a string is a valid hex color representation?

... -> match end i -> ignore case If you need support for 3-character HEX codes, use the following: /^#([0-9A-F]{3}){1,2}$/i.test('#ABC') The only difference here is that [0-9A-F]{6} is replaced with ([0-9A-F]{3}){1,2} This means that instead of matching exactly 6 charact...
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How do you get centered content using Twitter Bootstrap?

... 23 Answers 23 Active ...
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How to create a density plot in matplotlib?

...mpy as np from scipy.stats import gaussian_kde data = [1.5]*7 + [2.5]*2 + [3.5]*8 + [4.5]*3 + [5.5]*1 + [6.5]*8 density = gaussian_kde(data) xs = np.linspace(0,8,200) density.covariance_factor = lambda : .25 density._compute_covariance() plt.plot(xs,density(xs)) plt.show() I get which is pretty...
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How can I set the default value for an HTML element?

...the option you want to be the default. <option selected="selected"> 3 </option> share | improve this answer | follow | ...
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Python 3 Online Interpreter / Shell [closed]

...ike http://codepad.org/ or http://www.trypython.org/ which uses Python 3? 2 Answers ...
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How to convert list to string [duplicate]

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Remove a prefix from a string [duplicate]

... return text # or whatever As noted by @Boris and @Stefan, on Python 3.9+ you can use text.removeprefix(prefix) with the same behavior. share | improve this answer | ...
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How to jump to previous and last cursor in Sublime Text 3? [closed]

...back and forward through the cursor position history, then in Sublime Text 3 it's built in via the GoTo menu or keyboard shortcuts: Jump Back and Jump Forward – Jump Back allows you to go to previous editing positions. This goes hand in hand with Goto Definition: you can now inspect a symb...
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Splitting string with pipe character (“|”) [duplicate]

... answered Feb 3 '14 at 10:20 devnulldevnull 98.1k2727 gold badges195195 silver badges201201 bronze badges ...
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Access nested dictionary items via a list of keys?

... 236 Use reduce() to traverse the dictionary: from functools import reduce # forward compatibility ...