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What are the differences between Perl, Python, AWK and sed? [closed]

just want to know what are the main differences among them? and the power of each language (where it's better to use it). 5...
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What regular expression will match valid international phone numbers?

...rmat for matching a generic international phone number. I replaced the US land line centric international access code 011 with the standard international access code identifier of '+', making it mandatory. I also changed the minimum for the national number to at least one digit. Note that if you en...
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Creating a Radial Menu in CSS

... Almost 3 years later, I finally made the time to revisit this and post an improved version. You can still view the original answer at the end for reference. While SVG may be the better choice, especially today, my goal with this was to keep it just HTML and CSS, no JS, no SVG, no image...
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Finding the source code for built-in Python functions?

...rieving Source Code in the documentation of inspect. For built-in classes and methods this is not so straightforward since inspect.getfile and inspect.getsource will return a type error stating that the object is built-in. However, many of the built-in types can be found in the Objects sub-director...
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How to compare type of an object in Python?

...ty of details of why checking the type of an object is usually a bad idea, and what you probably should be doing instead. – Jeff Shannon Apr 2 '09 at 9:28 2 ...
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Why can't my program compile under Windows 7 in French? [closed]

I'm running Windows 7 French and I'm trying to compile this really basic program, but Visual Studio is being stubborn and refuses to comply. I also tried compiling it with both GCC 4.7 and Clang trunk on Coliru and I get more or less the same errors (output is below the code), though I think Colir...
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Is it good practice to use java.lang.String.intern()?

... that you're going to compare. It's easy to forget to intern() all strings and then you can get confusingly incorrect results. Also, for everyone's sake, please be sure to very clearly document that you're relying on the strings being internalized. The second disadvantage if you decide to internali...
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How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?

... If you're using Node.js, you're sure to have EcmaScript 5, and so Date has a toISOString method. You're asking for a slight modification of ISO8601: new Date().toISOString() > '2012-11-04T14:51:06.157Z' So just cut a few things out, and you're set: new Date().toISOString(). ...
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HTTP GET Request in Node.js Express

...I need to connect to another service. I am hoping the call is asynchronous and that the callback contains the remote server's response. ...
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Android ViewPager - Show preview of page on left and right

I'm using Android's ViewPager . What I want to do is to show a preview of the page on both the left and the right. I've seen where I can use a negative pageMargin to show a preview of the right side. ...