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Regular Expression: Any character that is NOT a letter or number
... 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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How to do a logical OR operation in shell scripting
I am trying to do a simple condition check, but it doesn't seem to work.
8 Answers
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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
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Check that the directory the keytool executable is in is on your %PATH% environment variable.
For example, on my Windows 7 machine, it is in
C:\Program Files (x86)\Java\jre6\bin, and my %PATH% variable looks like C:\Program Files (x86)\Common F...
How do I do an OR filter in a Django query?
...o list the items that either a user has added (they are listed as the creator) or the item has been approved.
6 Answers
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Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]
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An IDE is an integrated development environment - a suped-up text editor with additional support for developing (such as forms designers, resource editors, etc), compiling and debugging applications. e.g Eclipse, Visual Studio.
A Library is a chunk of code that you can call from your own code,...
How do I choose a HTTP status code in REST API for “Not Ready Yet, Try Again Later”? [closed]
... time. There's a batch process in the server that generates all the blobs for all the thingies. Thingy 1234 already exists and its data, other than the blob, is already available. The server hasn't got to generating thingy 1234's blob yet.
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Best architectural approaches for building iOS networking applications (REST clients)
...topic, but nevertheless I'm still confused. What is the best architecture for an iOS networked application? I mean basic abstract framework, patterns, which will fit every networking application whether it is a small app which only have a few server requests or a complex REST client. Apple recommend...
How can I determine if a variable is 'undefined' or 'null'?
How do I determine if variable is undefined or null ?
30 Answers
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When to wrap quotes around a shell variable?
Could someone tell me whether or not I should wrap quotes around variables in a shell script?
5 Answers
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What is the difference between
...rackets; not sent to client (as opposed to HTML comments).
Visit Ruby Doc for more infos about ERB.
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