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Rails: how do I validate that something is a boolean?
Does rails have a validator like validates_numericality_of for boolean or do I need to roll my own?
5 Answers
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How to format all Java files in an Eclipse project at one time?
...iles according to the settings in Eclipse. I don't want to edit every individual file with Ctrl + Shift + F . Is there a way to format all my files? Perhaps an Eclipse plugin?
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test a file upload using rspec - rails
...argument to post was a path helper method, whose only intended argument I didn't enclose in parentheses, so the following tokens were interpreted as additional args to the helper, rather than args for the post itself. E.g., I had post order_documents_path @order, document: file instead of post order...
Does Git Add have a verbose switch
...44890 git.c:415 trace: built-in: git config --get oh-my-zsh.hide-dirty
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Search all of Git history for a string? [duplicate]
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Git can search diffs with the -S option (it's called pickaxe in the docs)
git log -S password
This will find any commit that added or removed the string password. Here a few options:
-p: will show the diffs. If you provide a file (-p file), it will generate a patch for...
When to create a new app (with startapp) in Django?
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James Bennett has a wonderful set of slides on how to organize reusable apps in Django.
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Using NSPredicate to filter an NSArray based on NSDictionary keys
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I thought thats what it said, too. Apparently the quotes aren't needed. I'm not sure exactly what the guide is saying quotes "should" be used for.
– Corey Floyd
Jun 6 '09 at 0:20
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How do I use CMake?
...e a build directory (in the top source directory)
mkdir build-dir
go inside it
cd build-dir
then run cmake and point to the parent directory
cmake ..
and finally run make
make
Notice that make and cmake are different programs. cmake is a Makefile generator, and the make utility is govern...
RabbitMQ message size and types
...sed by the server by default. You can, however, limit this through server-side policy (configuration) or client side policy. Max Queue Length
There is more information and links on a related post.
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Add padding on view programmatically
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If you store the padding in resource files, you can simply call
int padding = getResources().getDimensionPixelOffset(R.dimen.padding);
It does the conversion for you.
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