SPUG: Choosing an object's method at runtime

[Sanford Morton]

Thanks for the many helpful comments on runtime method choice. A
natural followup question is:

> I'm storing a list of methods in an array
> 
>   @methods = qw (go stop);
> 
> which I'd like to call on an object which I know has those methods
> 
>   $p->$methods[0]();
> 
> But this generates a syntax error, and I can't find a combination of
> braces which doesn't. What does work is a temporary variable:
> 
>   $meth = $methods[0];
>   $p->$meth();

Damian Conway wrote privately that Perl's lexer doesn't permit what I
had wanted to do, since it requires a simple variable immediately
followed by a parenthesis in this construct. A compact expression is

  $p->$_() for $methods[0];

Thanks again for all your comments.

Sandy Morton


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