I can give you an example where you are going to have a hard time with only using one parameter.

I want you to write a rotuine that only takes one parameter that will allow me to determine is several scalars are the same entity or not.

So I have 

my ($x,$y,$z);
$x='a';
$y='b';
$z='c';

[download]
I want to be able to take any selection (including duplicates) and determine the number of distinct values. Thus 
Input          Output.
$x,$y,$x,$y => 2
$x,$y,$z    => 0
$x,$x,$x    => 1

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Oh, dont bother trying to hard to do this with just one parameter. It cant be done. :-)

And if that isnt a red rag to a bull then I dont know what is.

Yves / DeMerphq
---
Writing a good benchmark isnt as easy as it might look.

In reply to Re: Idea vs realization by demerphq
in thread passing arguments by mstone

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