[ILUG] OT Perl question

[Hunt, Bryan]

Here's the wierd thing though it works anyhow and isn't flagged as a problem
when using just -w switch (im using "use diagnostics" ). 

--B

-----Original Message-----
From: Ronan Waide [mailto:waider at waider.ie]
Sent: 20 March 2002 15:05
To: Hunt, Bryan
Cc: Ilug (E-mail)
Subject: RE: [ILUG] OT Perl question


On March 20, B.Hunt at emuse-tech.com said:
> The message isn't particularly meaningful but here it is. 
> 
> <whiney-message>
> Reference found where even-sized list expected at ./funnel.pl line 12 (#2)
>  
>     (W misc) You gave a single reference where Perl was expecting a list
> with
>     an even number of elements (for assignment to a hash). This
>     usually means that you used the anon hash constructor when you meant
>     to use parens. In any case, a hash requires key/value pairs.
>  
>         %hash = { one => 1, two => 2, };        # WRONG
>         %hash = [ qw/ an anon array / ];        # WRONG
>         %hash = ( one => 1, two => 2, );        # right
>         %hash = qw( one 1 two 2 );                      # also fine
>  
> Reference found where even-sized list expected at ./funnel.pl line 13 (#2)
> </whiney-message>
> 
> --B

Seems pretty explicit: you've given it a reference where it expected a
hash. %{users} isn't a hash. %{$users} might be, though. If you had
used perl -w, it would have flagged "users" as a bareword. This is why
the manual keeps telling you to use -w.

Cheers,
Waider.
-- 
waider at waider.ie / Yes, it /is/ very personal of me.

buzzard says, "If you are willing to put aside your kneejerk human
speciesism,
    the AIs are perfectly sympathetically 'no worse' than humans." <matrix>