Hi all,
This post describes how one can achieve dynamic method calling using scalars. 

my $foo = Obj->new;
for (qw( create init add )) {
  $foo->$_();  # note -- $foo->$_ will not work, ()'s needed
}

[download]

This approach works fine as long as you're not passing parameters along.
I want to do something along the lines of : 

my $method = 'Quantize';
my $parameters = qw (colorspace=>'gray' compression=>'none');
my $image = Image::Magick->new;
$image->Read('/share/colortransition.jpg');
$image->${method}($parameters);
$image->write(filename=>'/share/graytransition.jpg');

[download]

... but i'm getting Argument "colorspace=>'gray'" isn't numeric in subroutine entry at im.pl line 10.Now this tells me that probably the parameter passing works but it's expecting a numeric parameter and the "qw" garbles it somehow. Is my observation correct?

Jorg

"Do or do not, there is no try" -- Yoda

In reply to dynamic methods with variables by jorg

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