On 07/31/2015 03:02 PM, Gabor Szabo wrote:
The following code (with comments) is confusing me.
Can someone give some explanation please?
Specifically the difference between
my @x = <a b>;
It's the assignment to the Array variable that makes the Array here; < >
by itself just creates a Parcel:
$ ./perl6-m -e 'say <a b>.^name'
Parcel
$ ./perl6-m -e 'say (my @ = <a b> ).^name'
Array
# we can assign that array to a scalar variable and it is still and array
my $y = @x;
that's because assignment to $ isn't coercive in the same way as
assignment to @ or %.
It just wraps things into a Scalar, which is normally invisible.
But, you can observe the difference still>
my @a = <a b>;
my $s = @a'
for @a { } # two iterations
for $s { } # one iteration
Cheers,
Moritz
