On Mon, Oct 01, 2001 at 12:46:21PM +0200, birgit kellner wrote:
> Yes, I actually don't really understand these calls. What do the braces do?
> $regexp_func[$field] would be the array element number $field of
> @regexp_func.
Yes.
> Do the braces ensure that the variable is interpolated, to the effect that
> the subroutine with the value of $regexp_func[$field] as its name is
> called?
Without the braces the call:
&$regexp_func[$field]
would be equivalent to
&func[$field]
which is a syntax error.
So, all the braces do is insure that $regexp_func[$field] is called as a
subroutine; $regexp_func[$field] can be a code reference (i.e. a hard
reference), or the name of a subroutine (i.e. a soft reference). If it's
the latter, then the code is even more poorly written; soft references are
almost always a bad idea.
Michael
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