[LRUG] ShRUG Golf update

Thu May 12 05:04:38 PDT 2011

This fixes the infamous one-letter-word-does-not-have-a-second-letter bug.

sentence.split.sort_by{ |a| a[1] || 'z' } * ' '

Hakan

http://hakanensari.com

On Thu, May 12, 2011 at 11:34 AM, Paul Battley <pbattley at gmail.com> wrote:

> On 12 May 2011 10:54, Jordi Noguera Leon <jordinoguera83 at gmail.com> wrote:
> > It could be shortened into:
> > sentence.split(' ').sort_by{ |a| a[1] }.join ' '
>
> * If the parameter is unspecified, the default behaviour for split is
> to split on " ".[1]
>
> * String#join is aliased to String#*
>
> Thus, we can write it even shorter as:
>
> sentence.split.sort_by{ |a| a[1] } * " "
>
> 1. This is due to the fact that the default is $;, which defaults to
> nil, which means that you can use $; instead of nil to save a byte if
> you need nil anywhere.
>
> Paul.
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