more RE: Polygons & Nodal Points...

Wilson, Doug Doug_Wilson at
Thu Jul 26 11:31:48 CDT 2001

> while ( (my $rung) = shift @ladder )

> So in the first example, am I right in thinking (my $rung) is being
> eval'd in a list context, in which case I'm getting a -1 return value
> when @ladder has been cleared?

Almost. Even the list (undef) is a list with one undefined
element, so its value in scalar context is one (boolean true).

Shift returns a scalar, so you should not have parens around
your lvalues anyway.


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