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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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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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AngularJS toggle class using ng-class
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The second example is cleaner, but it's ridiculous that you can't put the variable you're evaluating at the front of the expression... it just reads funny. Imagine looking at the expression as an if statement: "if (variable) true: do this, false: do that... ugh #ful...
What is Prefix.pch file in Xcode?
...” and enabling Precompile Prefix Header so they get precompiled. But the idea behind a prefix header is different from precompiling.
A prefix header is implicitly included at the start of every source file. It’s like each source file adds
#import "Prefix.pch"
at the top of the file, before anyt...