From: "David A. Black" <dblack@...>
Date: 2005-04-28T19:21:56+09:00
Subject: Re: Scanning a String

Hi --

On Thu, 28 Apr 2005, Robert Klemme wrote:

>
> "Nicholas Seckar" <nseckar@gmail.com> schrieb im Newsbeitrag
> news:6bfb9c8a050427193967475977@mail.gmail.com...
>> On 4/27/05, David A. Black <dblack@wobblini.net> wrote:
>>> (You don't really need the block arg (match) :-)
>>
>> Good point :-)
>>
>>>    pious".gsub(/([aeiou])(?=[aeiou])/) { "#{$1}'#{$2}" }
>>
>> We could also do away with the block altogether and use
>> "pious".gsub(/([aeiou])(?=[aeiou])/, '\1\'\2')
>>
>> Although I don't know if one approach is preferred to the other.
>
> Yes, it's preferred because it's faster.  Although your variant works, I
> usually prefer to put the correct number of backslashes in there:
>
> "pious".gsub(/([aeiou])(?=[aeiou])/, '\\1\'\\2')

Why do you consider that more correct?


David

-- 
David A. Black
dblack@wobblini.net