Comments on: Ruby Quiz: Unit Conversions

By: kretch

kretch — Mon, 16 Feb 2009 07:32:22 +0000

@Kevin
The issue with ruby-units is that it fails on mixed units. i.e. if I have a string “7 lb 2 oz”, and I’d like to find out how many ounces that is equivalent to, ruby-units isn’t happy at all. Google, on the other hand, is

By: [YS.PRO]

[YS.PRO] — Sun, 23 Nov 2008 21:09:10 +0000

@anon: I heard ruby’s string is already object

By: anon

anon — Thu, 20 Nov 2008 22:57:39 +0000

I heard converting strings to objects is impossible.

By: Kevin Olbrich

Kevin Olbrich — Thu, 20 Nov 2008 21:57:36 +0000

If you are going to do that, you might as well just use one of the gems that can do unit conversion (like ruby-units, or facets).

require ‘rubygems’
require ‘ruby-units’

‘10 m/s’.to(’mph’) #=>22.3694 mph

the benefit here is that you get a real object you can use like a numeric, which you can do additional math on.

By: mark

mark — Thu, 20 Nov 2008 18:15:48 +0000

hehehe

a bit cheating, but i guess it is ok