From: Todd Benson <caduceass@...>
Date: 2007-12-30T19:14:03+09:00
Subject: Re: sub is odd with #

On Dec 30, 2007 4:10 AM, Todd Benson <caduceass@gmail.com> wrote:
> On Dec 30, 2007 3:11 AM, Pavel Pvl <pavel989@gmail.com> wrote:
> > seems to me as though I'm redundant on this forum...
> >
> >
> > well anyway, doing '@@@@'.sub('@','#')
> >
> > returns
> > '/#@@@'
>
> It should return "\#@@@" (backslash before a character inside a double
> quoted string is an escaped character).  You are looking at the
> general string representation of '#@@@'.  Do this to see what I mean
> ...
>
> irb> '@@@@'.sub('@', '#').each_byte { |b| puts b }
>
> When you use 1.8 you see 4 integers, the first one the byte code for
> the # sign, the others for the @ sign.  I think 1.9 is the same way
> with #each_byte, but haven't tried it out.
>
> >
> > how can I make it so that it doesn't through in the /  ?
>
> irb> puts '@@@@'.sub('@', '#')
>
> >
> > using 1.9 btw
> >
> > gsub doesn't do that, but I specifically ned sub to do that.
>
> '####' is not special and doesn't need to be escaped.
>
> The character sequence '#@' is because it is a short hand way of
> "exploding" a class variable inside a String.

That would be "class instance variable".  My bad.

Todd