On Tuesday 08 Dec 2009 12:18:10 Jeff Pang wrote:
> Shlomi Fish:
> > On Tuesday 08 Dec 2009 11:46:59 Jeff Pang wrote:
> >> Shlomi Fish:
> >>> Regarding using string eval "" - you can do the same using
> >>> UNIVERSAL::can, which would be safer in this case:
> >>>
> >>> <<<<
> >>> __PACKAGE__->can("asub")->(@params);
> >>
> >> or define a package and use AUTOLOAD method?
> >
> > How will the AUTOLOAD method help you here?
>
> sub AUTOLOAD {
> our $AUTOLOAD;
> print "I see $AUTOLOAD(@_)\n";
> }
>
> asub("abc"); # prints: I see main::asub("abc")
>
And how will this help? The OP wanted to call a method by the name of "asub"
by having it in a separate method. In the AUTOLOAD function you'll have a
gigantic dispatch statement again.
> > And AUTOLOAD is almost always not
> > a good idea.
>
> Why?
>
See Perl Best Practices:
http://oreilly.com/catalog/9780596001735
Namely, AUTOLOAD slows down the method lookup considerably, and can cause many
subtle bugs in the mis-spelling of methods and other subroutines.
Regards,
Shlomi Fish
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