From: Tom Sawyer <transami@...>
Date: 2002-07-12T04:30:11+09:00
Subject: Re: spliter of for...each: looping

> "junk#{x}morejunk" is much faster then "junk" << x << "morejunk"

oh, FYI, both of these are faster then "junk" + x + "morejunk"

~transami

On Thu, 2002-07-11 at 13:22, Tom Sawyer wrote:
> > Seems a little cleaner/clearer, but that's IMHO of course :)  Your
> > method is probably more efficient, since the one I mentioned creates
> > an intermediate array.  I guess it depends on how performance critical
> > the code in question is.
> 
> actually joins faster. just tested it out. also discovered that:
> 

> 
> thanks for all the help guys! i think i can speed up miter a bit just by
> using join.
> 
> ~transmi
> 
> 
> On Thu, 2002-07-11 at 09:50, Josh Huber wrote:
> > Tom Sawyer <transami@transami.net> writes:
> > 
> > > what i now do:
> > > q = ''
> > > arr.each_with_nindex do |x, n|
> > >   q << 'junk' << x << 'morejunk' 
> > >   q << ',' if n != -1
> > > end
> > >
> > > how do you do it with join?
> > >
> > > note: how i used to do it is probably a tad faster actually
> > 
> > Hmm, how about something like...
> > 
> > arr.collect { |x| 'junk' + x + 'morejunk' }.join(",")
> > 
> > ?
> > 
> > Seems a little cleaner/clearer, but that's IMHO of course :)  Your
> > method is probably more efficient, since the one I mentioned creates
> > an intermediate array.  I guess it depends on how performance critical
> > the code in question is.
> > 
> > -- 
> > Josh Huber
> > 
> -- 
> ~transami
> 
> "They that can give up essential liberty to obtain a little
>  temporary safety deserve neither liberty nor safety."
> 	-- Benjamin Franklin
> 
> 
-- 
~transami

"They that can give up essential liberty to obtain a little
 temporary safety deserve neither liberty nor safety."
	-- Benjamin Franklin