From: Christian Neukirchen <chneukirchen@...>
Date: 2006-07-29T22:53:30+09:00
Subject: Re: String#chop slow?  REALLY slow?

Jake McArthur <jake.mcarthur@gmail.com> writes:

> Let's see how String#chop is implemented...
>
>
> static VALUE
> rb_str_chop(str)
>     VALUE str;
> {
>     str = rb_str_dup(str);
>     rb_str_chop_bang(str);
>     return str;
> }
>
>
> So it's in C... interesting....

And that's the reason why it's slower... it always dups the string, while
string[a..b] creates a shared substring (copy-on-write).

> - Jake McArthur
>

-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org