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How to get a specific version of a file in Mercurial?

I am new to Mercurial. Just cannot find the right command. Tried update/checkout with no luck. I am using local repository. Thanks ...
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List all the modules that are part of a python package?

... a straightforward way to find all the modules that are part of a python package? I've found this old discussion , which is not really conclusive, but I'd love to have a definite answer before I roll out my own solution based on os.listdir(). ...
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How to upgrade Eclipse for Java EE Developers?

Is there any non-painful way to upgrade an Eclipse installation? I have tried browsing the eclipse site but I cannot find an useful description. ...
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What is the difference between trie and radix trie data structures?

Are the trie and radix trie data structures the same thing? 3 Answers 3 ...
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Conditional HTML Attributes using Razor MVC3

The variable strCSSClass often has a value but sometimes is empty. 3 Answers 3 ...
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How can I combine hashes in Perl?

What is the best way to combine both hashes into %hash1? I always know that %hash2 and %hash1 always have unique keys. I would also prefer a single line of code if possible. ...
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Passing arguments to require (when loading module)

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Android onCreate or onStartCommand for starting service

Usually when I create an Android service I implement the onCreate method, but in my last project this does not work. I tried implementing onStartCommand , and this seems to work. ...
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Declare a constant array

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HMAC-SHA1 in bash

Is there a bash script to generate a HMAC-SHA1 hash? 4 Answers 4 ...