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What is :: (double colon) in Python when subscripting sequences?
I know that I can use something like string[3:4] to get a substring in Python, but what does the 3 mean in somesequence[::3] ?
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How to check if running in Cygwin, Mac or Linux?
I have a shell script that is used both on Windows/Cygwin and Mac and Linux. It needs slightly different variables for each versions.
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Display two files side by side
How can 2 unsorted text files of different lengths be display side by side (in columns) in a shell
9 Answers
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How to check whether a string is a valid HTTP URL?
There are the Uri.IsWellFormedUriString and Uri.TryCreate methods, but they seem to return true for file paths etc.
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How to output only captured groups with sed?
Is there any way to tell sed to output only captured groups? For example given the input:
8 Answers
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What's the most efficient way to erase duplicates and sort a vector?
I need to take a C++ vector with potentially a lot of elements, erase duplicates, and sort it.
23 Answers
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Count character occurrences in a string in C++
How can I count the number of "_" in a string like "bla_bla_blabla_bla" ?
13 Answers
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Socket send函数和recv函数详解以及利用select()函数来进行指定时间的阻塞 ...
Socket send函数和recv函数详解以及利用select()函数来进行指定时间的阻塞int send( SOCKET s, const char FAR *buf, int len, int flags ); 不论是客户还是服务器应用程序都用send函数来向TCP连接的...int send( SOCKET s, const char FAR *buf, int len, int flags );
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How to make the python interpreter correctly handle non-ASCII characters in string operations?
I have a string that looks like so:
11 Answers
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How to validate an email address in JavaScript
Is there a regular expression to validate an email address in JavaScript?
95 Answers
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