Re: copying and s/// (was Re: Overlapping RFCs 135 138 164)

[Nathan Wiger]

Uri Guttman wrote:
> 
>   TC>     ($this = $that) =~ s/foo/bar/;
>   TC>     for (@these = @those) { s/foo/bar/ }
> 
>   TC> You can't really do those in one step without it.

RFC 164 v2 has a new syntax that lets you do the above or, if you want:

   $this = s/foo/bar/, $that;
   @these = s/foo/bar/, @those;

Consistent with split, join, splice, etc, etc.

> but we need a better syntax for s/// that doesn't modify its string but
> returns a copy which has had the substitution applied to it.

See RFC 164 v2, all this is supported, as well as this:

   @str =~ s/foo/bar/;

Which has been a pipe dream for some time.

-Nate