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Find and restore a deleted file in a Git repository

Say I'm in a Git repository. I delete a file and commit that change. I continue working and make some more commits. Then, I find I need to restore that file. ...
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Convert datetime to Unix timestamp and convert it back in python

I have dt = datetime(2013,9,1,11) , and I would like to get a Unix timestamp of this datetime object. 11 Answers ...
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How to find where a method is defined at runtime?

...d occurred, a backend process failed to run. Now, we were good little boys and girls and ran rake test after every check-in but, due to some oddities in Rails' library loading, it only occurred when we ran it directly from Mongrel in production mode. ...
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When should we use mutex and when should we use semaphore

When should we use mutex and when should we use semaphore ? 12 Answers 12 ...
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Difference between Python's Generators and Iterators

What is the difference between iterators and generators? Some examples for when you would use each case would be helpful. 1...
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What does this square bracket and parenthesis bracket notation mean [first1,last1)?

I have seen number ranges represented as [first1,last1) and [first2,last2) . 4 Answers ...
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Python timedelta in years

...een since some date. Currently I've got timedelta from datetime module and I don't know how to convert it to years. 16 ...
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OS X Terminal Colors [closed]

...rminal colors. Edit your .bash_profile (since OS X 10.8) — or (for 10.7 and earlier): .profile or .bashrc or /etc/profile (depending on availability) — in your home directory and add following code: export CLICOLOR=1 export LSCOLORS=GxFxCxDxBxegedabagaced CLICOLOR=1 simply enables coloring o...
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What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?

Why were 181783497276652981 and 8682522807148012 chosen in Random.java ? 3 Answers ...
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StringIO in Python3

I am using Python 3.2.1 and I can't import the StringIO module. I use io.StringIO and it works, but I can't use it with numpy 's genfromtxt like this: ...