[aklug] Re: perl doesn't natively do booleans?????

On Tue, Aug 17, 2010 at 02:14:09PM -1000, Lee wrote:
> Which just blows my mind. So obviously I'm missing something because
> that just makes no sense. What am I missing? How do you do
> conditionals? Or do you have to explicitly do the comparison?
> (answer is 'not so far, apparently') But to what?

There are four false values: undef, 0, "0", ""

Everything else is true.

You do not compare to a value to determine true or false, you simply
test:

    if ($foo) { ... }

    unless ($bar) { ... }

    while ($baz) { ... }

    if (10 == 20) { ... }

Whether or not this means Perl has booleans depends on what you mean.
Perl clearly has the ability to test for true or false.

--
Michael Fowler
www.shoebox.net
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