From: Jean-Hugues ROBERT <jean_hugues_robert@...>
Date: 2002-04-02T02:40:13+09:00
Subject: Re: String#begins?(s)

Hi,

I agree that str.begins?( xxx) is not ideal (try saying it aloud). 
"begin_with?" is certainly better. I tend to prefer "start_with?" however.

But xx1.AAA( yy2) is sometimes easier to name yy2.BBB( xx1). So... 
substr.begin?( str) could make sense (I still prefer "start?")

if  foo.start? "hello, world!" then
   # "hello, world!" begins with foo
end

Hence, I vote (for what's it worth) for:

   s.start?(x)
         Returns true if substring s is at the beginning of string x.

   s.end?(x)
         Returns true if substring s is a the end of string x.

   s.include?(x)
         Returns true if s includes substring x

However this may be counter intuitive because we are used to have str.MMM( 
substr) signatures, versus substr.MMM( str).

jhr

   if     paramount_logo.start? the_movie then
     movie_producer = 'Paramount'
   elsif  lucas_films_logo.start? the_movie then
     movie_producer = 'Lucas films'
   else
     movie_producer = 'Independant'
   end

vs

   if     the_movie.start_with? paramount_logo then
     movie_producer = 'Paramount'
   elsif the_movie.start_with? lucas_films_logo then
     movie_producer = 'Lucas films'
   else
     movie_producer = 'Independant'
   end



At 12:31 01/04/2002 +0900, you wrote:
>Hi,
>
>In message "String#begins?(s)"
>     on 02/04/01, Tim Sutherland <timsuth@ihug.co.nz> writes:
>
>|class String
>|    def begins?(s)
>|        self[0...(s.size)] == s
>|    end
>|end
>|
>|Worthwhile?
>
>I don't like the name "begins?".  It's not obvious.
>I don't like names like "beginWith?" or "begin_with?" neither.
>
>                                                         matz.
>p.s.
>If you can find a good name, you've accomplished 90% of the job.

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