大约有 45,000 项符合查询结果(耗时:0.0590秒) [XML]

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jQuery OR Selector?

...to have "OR" logic in jQuery selectors. For example, I know an element is either a descendant of an element with class classA or classB, and I want to do something like elem.parents('.classA or .classB') . Does jQuery provide such functionality? ...
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Removing transforms in SVG files

I have been struggling with this for a while, and can't seem to find an answer (that works) anywhere. I have an SVG file which looks like this: ...
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How do I pass a string into subprocess.Popen (using the stdin argument)?

...nd data to the process’s stdin, you need to create the Popen object with stdin=PIPE. Similarly, to get anything other than None in the result tuple, you need to give stdout=PIPE and/or stderr=PIPE too. Replacing os.popen* pipe = os.popen(cmd, 'w', bufsize) # ==> p...
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Why should I not wrap every block in “try”-“catch”?

...ave always been of the belief that if a method can throw an exception then it is reckless not to protect this call with a meaningful try block. ...
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What is the Difference Between Mercurial and Git?

I've been using git for some time now on Windows (with msysGit) and I like the idea of distributed source control. Just recently I've been looking at Mercurial (hg) and it looks interesting. However, I can't wrap my head around the differences between hg and git. ...
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How to efficiently concatenate strings in go

In Go, a string is a primitive type, which means it is read-only, and every manipulation of it will create a new string. ...
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Co-variant array conversion from x to y may cause run-time exception

... What it means is this Control[] controls = new LinkLabel[10]; // compile time legal controls[0] = new TextBox(); // compile time legal, runtime exception And in more general terms string[] array = new string[10]; object[] obj...
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Set size on background image with CSS?

Is it possible to set the size of the background image with CSS? 18 Answers 18 ...
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error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' — Miss

My problem started off with me not being able to log in as root any more on my mysql install. I was attempting to run mysql without passwords turned on... but whenever I ran the command ...
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Numpy - add row to array

... What is X? If it is a 2D-array, how can you then compare its row to a number: i < 3? EDIT after OP's comment: A = array([[0, 1, 2], [0, 2, 0]]) X = array([[0, 1, 2], [1, 2, 0], [2, 1, 2], [3, 2, 0]]) add to A all rows from X where t...