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Adding :default => true to boolean in existing Rails column
... that you would have to create a rake task or just go in the rails console and update all the records (which I would not recommend in production).
When you added t.boolean :show_attribute, :default => true to the create_profiles migration, it's expected that it didn't do anything. Only migrations...
How does password salt help against a rainbow table attack?
I'm having some trouble understanding the purpose of a salt to a password. It's my understanding that the primary use is to hamper a rainbow table attack. However, the methods I've seen to implement this don't seem to really make the problem harder.
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How do I clear my local working directory in Git? [duplicate]
...t clean -d -x -f
will remove untracked files, including directories (-d) and files ignored by git (-x). Replace the -f argument with -n to perform a dry-run or -i for interactive mode, and it will tell you what will be removed.
Relevant links:
git-reset man page
git-clean man page
git ready "cl...
Uploading images using Node.js, Express, and Mongoose
...e the poor indentation. I wasn't sure how to indent properly when copying and pasting. The code comes straight from Express multipart/form-data example on GitHub.
// Expose modules in ./support for demo purposes
require.paths.unshift(__dirname + '/../../support');
/**
* Module dependencies.
*/...
Ninject vs Unity for DI [closed]
...re you limiting your choices to these two? I think Castle.Windsor, Autofac and StructureMap are at least as good or better.
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How to handle WndProc messages in WPF?
In Windows Forms, I'd just override WndProc , and start handling messages as they came in.
9 Answers
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How can I remove all text after a character in bash?
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cut works, but I Dennis' answer is better and more flexible. Does anyone know if it spawns a new process like cut?
– JoBu1324
Feb 20 '14 at 18:06
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Where does Jenkins store configuration files for the jobs it runs?
...itself is kept on an EC2 machine - one that might need to be taken offline and brought back on an entirely different EC2 instance at any point. We have a bunch of Puppet manifests allowing us to easily reinstall the software on the EC2 instance, but custom configuration files, like the ones for the ...
(Deep) copying an array using jQuery [duplicate]
...an a value.
Likewise delete(b[0][0]) also causes a[0][0] to be deleted and b[0][0]=99 also changes the value of a[0][0] to 99.
jQuery's extend method does perform a deep copy when a true value is passed as the initial argument:
var a =[[1], [2], [3]];
var b = $.extend(true, [], a);
b.shift()....
UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1
...TF-8. I've tried numerous things, including using string.encode('utf-8') and unicode(string) , but I get the error:
16 A...