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How to get the original value of an attribute in Rails
is there a way to get the original value that an ActiveRecord attribute (=the value that was loaded from the database)?
4 A...
Can a dictionary be passed to django models on create?
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If title and body are fields in your model, then you can deliver the keyword arguments in your dictionary using the ** operator.
Assuming your model is called MyModel:
# create instance of model
m = MyModel(**data_dict)
# don't forget to save to database!
m...
Warning the user/local/mysql/data directory is not owned by the mysql user
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If you can't start mysql service in snow leopard, and in the panel prefs appears 'warning the user/local/mysql/data directory is not owned by the mysql user', you have to:
sudo chown -RL root:mysql /usr/local/mysql
sudo chown -R...
What does an underscore in front of an import statement mean?
I saw this example from sqlite3 on GitHub :
4 Answers
4
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Reduce git repository size
I tried looking for a good tutorial on reducing repo size, but found none. How do I reduce my repo size...it's about 10 MB, but the thing is Heroku only allows 50 MB and I'm no where near finished developing my app.
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How to make clang compile to llvm IR
...clang to compile my C/C++ code to LLVM bytecode rather than binary executable. How can I achieve that? And if I get the LLVM bytecode, how can I take it to further compile it to binary executable.
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Symfony 2: How do I check if a user is not logged in inside a template?
In Symfony 2 templates (using Twig), how can I effectively check whether a user is not logged in?
2 Answers
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How can I add a boolean value to a NSDictionary?
Well, for integers I would use NSNumber . But YES and NO aren't objects, I guess. A.f.a.i.k. I can only add objects to an NSDictionary , right?
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What is the “reactor” in Maven?
I've been reading about Maven reactor and am confused by its terminology usage. I've read that a multi-module is a reactor, that you can manipulate the maven reactor and that the reactor is a plugin. What exactly is the reactor?
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What events does an fire when it's value is changed?
Just wondering whether anyone knows what events an HTML5 <input type="number" /> element fires when its up / down arrows are clicked:
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