Chip Salzenberg wrote:

* As far as I can tell, the choice of spelling an array parameter
C<Array @a> or C<Array $a> is entirely cosmetic: both @a and
$a are capable of holding an Array reference. Is there actually
a difference, e.g. in how they handle an undefined value?

Uhm... It was my impression that one of those creates an Array of Arrays, and the other just an Array. In other words, using @ instead of $ puts a "Array of" in front of the supplied type.

This makes sense when one considers orthogonality with C<Int @a> and C<Int $a>. But it's easy to get tripped up it.

-- Rod Adams

(Who needs more days in the week, so he can continue work on S29).

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