Re: parse problem with subroutines?

On Tue, May 31, 2005 at 08:05:04AM -0500, david d zuhn wrote:
> If this is indeed a statement that all function calls, especially
> the ordinary sort that are used most often, must be of the form "a(b)"
> rather than allowing "a (b)", this is a pretty fundamental change in
> perl that ought to be made a bit clearer 

It's not just function calls. Arrays and hashes require no whitespace
between the name and the subscript unless you use the dot form.

        @a[0]           # ok
        @a.[0]          # ok
        @a [0]          # WRONG
        @a  .[0]        # ok
        %h{'k'}         # ok
        %h.{'k'}        # ok
        %h {'k'}        # WRONG
        %h  .{'k'}      # ok
        %h<k>           # ok
        %h.<k>          # ok
        %h  <k>         # WRONG
        %h  .<k>        # ok

Also note that the dot follows the subscript so that the following are
also incorrect:

        foo. ()         # WRONG
        @a.  [0]        # WRONG
        %h.  {'k'}      # WRONG
        %h.  <k>        # WRONG

Unless I'm completely mistaken, in which case someone had better
correct me  :-)

> (it's not in the p5->p6 porting guide, for example).

I didn't really realize that there was a p5->p6 porting guide until I
saw this.  I'll add something to the guide as above (plus subs).

-Scott
-- 
Jonathan Scott Duff
duff@xxxxxxxxx