From: Kristofer M White <me@...>
Date: 2010-12-09T09:48:25+09:00
Subject: Re: Splitting on capital letters

On 12/08/2010 06:02 PM, Ralph Shnelvar wrote:
> JB> Whether or not this is a good way may be up for debate, but it's *a* way:
> 
> irb(main):001:0>> "BenefitsAndFeatures".split(/([[:upper:]][[:lower:]]*)/).delete_if(&:empty?).join("-")
> =>> "Benefits-And-Features"
> 
> This is sooo far beyond my skill level.
> 
> I'm gonna have to study this one for a while.
> 
> Thanks!
> 
> Ralph
Simple explanation:

"BenefitsAndFeatures".split(/([[:upper:]][[:lower:]]*)/) returns an
array that was made from the string provided. The pattern for splitting
is a capital letter ([[:upper:]]) followed by one or more lowercase
letters ([[:lower:]]*):

irb(main):001:0> "BenefitsAndFeatures".split(/([[:upper:]][[:lower:]]*)/)
=> ["", "Benefits", "", "And", "", "Features"]
irb(main):002:0>


On that array, we call .delete_if(&:empty?) which will delete any
element from the array if it returns true to the empty check.

irb(main):002:0> _.delete_if(&:empty?)
=> ["Benefits", "And", "Features"]
irb(main):003:0>

On the cleaned array, we re-join into a string putting a dash between
each element.

irb(main):003:0> _.join("-")
=> "Benefits-And-Features"


-- 
---
Thanks,
Kristofer M White
http://www.kmwhite.net
https://www.github.com/kmwhite/