大约有 41,000 项符合查询结果(耗时:0.0521秒) [XML]

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How to specify more spaces for the delimiter using cut?

Is there any way to specify a field delimiter for more spaces with the cut command? (like " "+) ? For example: In the following string, I like to reach value '3744', what field delimiter I should say? ...
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How to determine the first and last iteration in a foreach loop?

The question is simple. I have a foreach loop in my code: 20 Answers 20 ...
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Get string between two strings in a string

I have a string like: 22 Answers 22 ...
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Combined area of overlapping circles

I recently came across a problem where I had four circles (midpoints and radius) and had to calculate the area of the union of these circles. ...
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Can Selenium interact with an existing browser session?

Does anybody know if Selenium (WebDriver preferably) is able to communicate with and act through a browser that is already running before launching a Selenium Client? ...
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“please check gdb is codesigned - see taskgated(8)” - How to get gdb installed with homebrew code si

I'm under osx 10.8.4 and have installed gdb 7.5.1 with homebrew (motivation get a new gdb with new features such as --with-python etc... ) ...
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How do I create an empty array/matrix in NumPy?

I can't figure out how to use an array or matrix in the way that I would normally use a list. I want to create an empty array (or matrix) and then add one column (or row) to it at a time. ...
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How to revert uncommitted changes including files and folders?

Is there a git command to revert all uncommitted changes in a working tree and index and to also remove newly created files and folders? ...
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Access object child properties using a dot notation string [duplicate]

I'm temporarily stuck with what appears to be a very simple JavaScript problem, but maybe I'm just missing the right search keywords! ...
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How can you find the height of text on an HTML canvas?

The spec has a context.measureText(text) function that will tell you how much width it would require to print that text, but I can't find a way to find out how tall it is. I know it's based on the font, but I don't know to convert a font string to a text height. ...