大约有 46,000 项符合查询结果(耗时:0.0485秒) [XML]

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How do you make an array of structs in C?

I'm trying to make an array of structs where each struct represents a celestial body. 7 Answers ...
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Numbering rows within groups in a data frame

Working with a data frame similar to this: 7 Answers 7 ...
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How to validate an Email in PHP?

How can I validate the input value is a valid email address using php5. Now I am using this code 7 Answers ...
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How to make an OpenGL rendering context with transparent background?

Rendering contexts usually have a solid color on the background (black or whatever, see the image below): 9 Answers ...
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Set every cell in matrix to 0 if that row or column contains a 0

Given a NxN matrix with 0s and 1s. Set every row that contains a 0 to all 0 s and set every column that contains a 0 to all 0 s. ...
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How do I create an average from a Ruby array?

How would get find an average from an array? 20 Answers 20 ...
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Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]

Why is the result of the following two statements different? 6 Answers 6 ...
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Python and pip, list all versions of a package that's available?

Given the name of a Python package that can be installed with pip , is there any way to find out a list of all the possible versions of it that pip could install? Right now it's trial and error. ...
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Regular expression for matching HH:MM time format

I want a regexp for matching time in HH:MM format. Here's what I have, and it works: 19 Answers ...
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Creating a CSS3 box-shadow on all sides but one

I've got a tabbed navigation bar where I'd like the open tab to have a shadow to set it apart from the other tabs. I'd also like the whole tab section to have a single shadow (see bottom horizontal line) going up, shading the bottom of all tabs except for the open one. ...