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Convert absolute path into relative path given a current directory using Bash
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$ python -c "import os.path; print os.path.relpath('/foo/bar', '/foo/baz/foo')"
gives:
../../bar
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What is the concept of erasure in generics in Java?
...rces:
Oracle documentation
Wikipedia
Gilad Bracha's Java generics guide (PDF - highly recommended; link may need to change periodically)
Angelika Langer's Java Generics FAQ
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Why do you need to put #!/bin/bash at the beginning of a script file?
... most systems run bash, the "Bourne Again Shell"), scripts can be in bash, python, perl, ruby, PHP, etc, etc. For example, you might see #!/bin/perl or #!/bin/perl5.
PS:
The exclamation mark (!) is affectionately called "bang". The shell comment symbol (#) is sometimes called "hash".
PPS:
Rememb...
Is there still any reason to learn AWK?
... the best tool for the job... and now even though his students like me use python and what not, he sticks to what he knows and works well.
In closing, there is a lot of old code kicking around the world, knowing a little awk isn't going to hurt. It will also make you better *nix person :-)
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Is there a list of Pytz Timezones?
... to know what are all the possible values for the timezone argument in the Python library pytz. How to do it?
7 Answers
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django syncdb and an updated model
...e recently updated my model, added a BooleanField to it however when I do python manage.py syncdb , it doesn't add the new field to the database for the model. How can I fix this ?
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The purpose of Model View Projection Matrix
...s book is an excellent 3D game math resource. The same chapter as a sample PDF from the book's website.
– legends2k
Mar 21 '14 at 8:31
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How can I randomize the lines in a file using standard tools on Red Hat Linux?
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A one-liner for python:
python -c "import random, sys; lines = open(sys.argv[1]).readlines(); random.shuffle(lines); print ''.join(lines)," myFile
And for printing just a single random line:
python -c "import random, sys; print random.ch...
How to get a function name as a string?
In Python, how do I get a function name as a string, without calling the function?
12 Answers
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Custom Adapter for List View
... patterns used in the above example
http://commonsware.com/Android/excerpt.pdf
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