You've already gotten lots of good explanations and answers. In your case, graff's node sounds like the best answer.

I just want to offer another suggestion for the general case.

What is the proper syntax for passing arguments to a subroutine that has a named reference when using callbacks?

You can use closures, as dank suggested; but you can do it without copying the whole subroutine body and you can make it general.

sub callback { 
    my $coderef = shift; 
    my @args = @_; 
    sub { $coderef->(@args) } 
}

[download]

That will allow you to write things like 

    -command => callback($change_mode, 3),

[download]
but will work with any coderef (named or not) and arguments.

-sauoq
"My two cents aren't worth a dime.";

In reply to Re: Passing arguments to callback routines with named references by sauoq
in thread Passing arguments to callback routines with named references by nysus

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