[thelist] Perl references

[shawn allen]

quoth Beam:
> > I suspect that it's my failure to grasp referencing implementation
> > in Perl, but I would appreciate *any* help here...
>
> rule #1: put the "-w" flag at the end of the #! line on every perl
> script you write.
> rule #2: put 'use strict' at the top of every perl script

Great advice.

> for ($i = 0; $i < $#week; $i++) { # $#arrname gives the index value

`$#week' will actually give you the value of the list's last index,
which is *one less than* the total number of elements in a 0-based list.
Example:

#!/usr/bin/perl
@week = qw(foo bar baz);
printf("\%d\n", $#week);

This prints 2. Either use the <= operator in your for loop, or use
`scalar @week' instead. :)

--
shawn allen
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