Hi,
it does not seem to be possible to use indirect method invocation with anything
but a scalar. While this works:
my $mode = $parameters{mode};
$item->$mode();
I cannot seem to find a proper bracketing to make this work:
$item->$parameters{mode}();
Is my assumption correct?
My other problem is that the cookbook quotes (something like) the following
code as an example for storing method names:
my %actions = (
display => $item->display(),
move_picture => $item->move_picture($item->{id},
$item->{parameters}->{position}),
commit => $item->commit()
);
Now I thought I could use
$actions{$parameter{mode}};
to invoke the proper method, but I get a "Useless use of hash element in a void
context" error.
I can see why I get that error - but why would someone want to build a hash
like %actions then, which just maps names to method invocations, without a way
to actually get to those method invocations?
In other words, I would like to have something like the %actions hash to
construct a more flexible version of the $item->$mode() construct, where I can
pass different additional parameters to each method.
Thanks,
Jan
I have known more men destroyed by the desire to have wife and child and to
keep them in comfort than I have seen destroyed by drink and harlots. - W.B.
Yates
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