All posts tagged ruby.

dannygarcia:

Dropzone

Drop stuff in this thing’s stuff to do stuff.

The fact that the extension API for this is based on ruby is making me want to buy it.

The 2nd “stable” release of Shoes just came out.

strelau:

Let’s say you have

named_scope :red, :conditions => {:color => 'red'}

Do not do this:

Shirt.red(:limit => 1) #=> ALL red shirts

You will get all red shirts. I don’t care how many you limit to, you will get them all. Instead, you need to chain using find(:all) or it’s alias all:

Shirt.red.all(:limit => 1) #=> ONE red shirt

This has been your Rails public service announcement for 17 September 2008.

Wouldn’t it be easier to do this:?

Shirt.red.first/last

strelau:

Compare:

> def double(n)
>  n * 2
> end

> (1..5).map {|n| double(n)}
=> [2, 4, 6, 8, 10]

> (1..5).map &method(:double)
=> [2, 4, 6, 8, 10]

Explanation: method returns a Method object representing the named method. Method defines to_proc to return the Proc corresponding to the method. And we know that our trusty friend & tries to convert the object to a Proc using it’s to_proc method.

(via Giles Bowkett)

May as well add into this:

> (1..5).map {|n| n.double}
=> [2, 4, 6, 8, 10]

> (1..5).map {&double}
=> [2, 4, 6, 8, 10]

I generally prefer to use collect over map. It gives a better idea of what the method does, then again it is 4 characters longer :P.