I was asked to post a small summary of hyper ops for you guys. Here it
is:
Of course to hyperize an operator you surround it with ÂÂ, or just one
of them for a unary operator.
@a Â+Â @b
@aÂ++
You can't necessarily override their semantics without chaning how Perl
6 interprets the syntax (i.e. grammar munge). So for an operator ` :
@a Â`Â @b
Always means:
map -> $i { $a[$i] ` $b[$i] } 0..max([EMAIL PROTECTED], [EMAIL PROTECTED]);
Except that, if I recall, when one list runs out it uses a suitable,
operator-specific default. That is, 0 for +, 1 for *, who-knows-what
for %. I'm not certain on the details there.
When a binary op has one array and one scalar argument, the scalar side
is repeated:
@a Â+Â 1;
Means:
map { $_ + 1 } @a;
If you need to treat one side as scalar, you give it an explicit
context:
@a Â+Â [EMAIL PROTECTED]; # add the length of @b to @a
Of course to Parrot that means nothing.
And hyperization can be used on any operator declared with inifx:
prefix: or postfix: (so not things that just *look* like operators,
like ",").
@aÂ.[4] # Slice the fifth column of a matrix
Is legal because a subscript is a postfix operator.
Luke
