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Regular Expression: Any character that is NOT a letter or number

I'm trying to figure out the regular expression that will match any character that is not a letter or a number. So characters such as (,,@,£,() etc ... ...
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Create a pointer to two-dimensional array

...0]; array_of_20_uint8_t *matrix_ptr = l_matrix; Then you can enjoy life again :) matrix_ptr[0][1] = ...; Beware of the pointer/array world in C, much confusion is around this. Edit Reviewing some of the other answers here, because the comment fields are too short to do there. Multiple alter...
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How does the Amazon Recommendation feature work?

What technology goes in behind the screens of Amazon recommendation technology? I believe that Amazon recommendation is currently the best in the market, but how do they provide us with such relevant recommendations? ...
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Replace multiple characters in one replace call

...OR operator (|): var str = '#this #is__ __#a test###__'; str.replace(/#|_/g,''); // result: "this is a test" You could also use a character class: str.replace(/[#_]/g,''); Fiddle If you want to replace the hash with one thing and the underscore with another, then you will just have to chain. ...
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Is there a difference between /\s/g and /\s+/g?

When we have a string that contains space characters: 4 Answers 4 ...
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Determining the last changelist synced to in Perforce

...tion that occasionally arises is what is the best way to determine the changelist that you last synced to in Perforce. This is often needed for things like injecting the changelist number into the revision info by the automatic build system. ...
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How to find the largest file in a directory and its subdirectories?

We're just starting a UNIX class and are learning a variety of Bash commands. Our assignment involves performing various commands on a directory that has a number of folders under it as well. ...
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Understanding NSRunLoop

...one explain for what is NSRunLoop ? so as I know NSRunLoop is a something connected with NSThread right? So assume I create a Thread like ...
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How to determine the encoding of text?

...I don't know what charset was used. Is there a way to determine the encoding of a text file using Python? How can I detect the encoding/codepage of a text file deals with C#. ...
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Timeout command on Mac OS X?

...an use brew install coreutils And then whenever you need timeout, use gtimeout ..instead. To explain why here's a snippet from the Homebrew Caveats section: Caveats All commands have been installed with the prefix 'g'. If you really need to use these commands with their normal n...