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How to put comments in Django templates
...wered Jul 11 at 9:24
Rahul ShyokandRahul Shyokand
7388 bronze badges
a...
How are cookies passed in the HTTP protocol?
...not work with requests other than GET/POST, but I suspect that the browser and server implementations may not implement it in those cases.
– deinst
Jul 12 '12 at 15:02
5
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In Java, how do I parse XML as a String instead of a file?
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@shsteimer I am passing in xml string and it is returning null. It does not throw any exception. What must be wrong?
– sattu
Jun 28 '13 at 20:47
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How to safely open/close files in python 2.4
...python.org:
When you’re done with a file, call f.close() to close it and free up any system resources taken up by the open file. After calling f.close(), attempts to use the file object will automatically fail.
Hence use close() elegantly with try/finally:
f = open('file.txt', 'r')
try:
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argparse store false if unspecified
...t value of False.
Likewise, store_false will default to True when the command-line argument is not present.
The source for this behavior is succinct and clear: http://hg.python.org/cpython/file/2.7/Lib/argparse.py#l861
The argparse docs aren't clear on the subject, so I'll update them now: http:...
How to get commit history for just one branch?
Let's say I created a new branch my_experiment from master and made several commits to my_experiment . If I do a git log when on my_experiment , I see the commits made to this branch, but also the commits made to master before the my_experiments branch was created.
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How can i get the session object if i have the entity-manager
...yManagerImpl) em.getDelegate()).getSession();
I agree, that's horrible, and the spec is to blame here (not clear enough).
JPA 2.0
With JPA 2.0, there is a new (and much better) EntityManager#unwrap(Class<T>) method that is to be preferred over EntityManager#getDelegate() for new applicati...
Rails migrations: Undo default setting for a column
...n_default( :table_name, :column_name, from: nil, to: false )
end
Rails 3 and Rails 4
def up
change_column_default( :table_name, :column_name, nil )
end
def down
change_column_default( :table_name, :column_name, false )
end
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How do I show a Save As dialog in WPF?
I have a requirement in WPF/C# to click on a button, gather some data and then put it in a text file that the user can download to their machine. I can get the first half of this, but how do you prompt a user with a "Save As" dialog box? The file itself will be a simple text file.
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Size of character ('a') in C/C++
What is the size of character in C and C++ ? As far as I know the size of char is 1 byte in both C and C++.
4 Answers
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