-------- Original-Nachricht --------
> Datum: Mon, 16 Mar 2009 12:41:01 -0400
> Von: "Chas. Owens" <chas.ow...@gmail.com>
> An: Jim Gibson <jimsgib...@gmail.com>
> CC: beginners@perl.org
> Betreff: Re: Error: Can\'t call method "x" without a package or object
> reference...
> On Mon, Mar 16, 2009 at 12:23, Jim Gibson <jimsgib...@gmail.com> wrote:
> snip
> >> Can't call method "x" without a package or object reference at test.pl
> line 12
> >> <ENT> line 1
> snip
> >> $ent{$1} = \x{$2};
> snip
> > Without seeing all of your data, it is impossible to tell what actually
> went
> > wrong. Possibly the next line after 'aacute 00E1' did not match, perhaps
> > because it was blank or contained something other than one space between
> > entries.
> snip
>
> It isn't a data problem. Perl thinks he/she is trying to take the
> reference of the item returned by a call to the function x[1] with a
> malformed hashref (not an even number of list items). This is because
> the \x{} construct is only valid in strings. He/she also has a
> problem in that the \x{} does not interpolate values, it requires a
> hexadecimal constant. The right answer is the use hex to get the
> decimal value of the hexadecimal string he gets from the regex (which
> you rightly point out needs to have guards) and to feed that decimal
> value into the chr function to get the UNICODE character he/she is
> looking for.
>
> 1. If a function x had existed he/she would have gotten a completely
> different error message (i.e. the one about the malformed hash).
>
> --
> Chas. Owens
> wonkden.net
> The most important skill a programmer can have is the ability to read.
>
Thanks, Chas and Jim!
Chas' remark was quite right - I somewhat stupidly confused the functions \x{}
and char(). Now it does what I wanted it to do.
(I also take the point of filehandles and checking whether m// are successful.)
Thanks again for your help,
MCoiff'
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