# New Ticket Created by Aleks-Daniel Jakimenko-Aleksejev
# Please include the string: [perl #131111]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/Ticket/Display.html?id=131111 >
Code:
my @a = <a b c>;
my @b = <1 2 3>;
my @c = @a, @b;
say @c
Result:
[[a b c] [1 2 3]]
So with arrays, nothing is flattened and you get an array with two elements.
Makes sense.
And if we want to get a different behavior, we can use slip:
Code:
my @a = <a b c>;
my @b = <1 2 3>;
my @c = |@a, |@b;
say @c
Result:
[a b c 1 2 3]
Everything is fine so far. Now, let's try the same thing with hashes:
Code:
my %a = <a b c d>;
my %b = <1 2 3 4>;
my %c = %a, %b;
say %c
Result:
{1 => 2, 3 => 4, a => b, c => d}
To me that looks like an inconsistency, I would have expected it to create a
hash with one pair (%a => %b). In fact, both ｢%c = %a, %b｣ and ｢%c = |%a, |%b｣
work exactly the same!
The idea of %a => %b may seem weird, but it really isn't if you consider object
hashes (my %c{Hash} = %a => %b; or even my %c{Hash} = $%a, $%b)
Another thing to note is that this array behavior was changed during the GLR,
but hashes remained the same. Perhaps that was an oversight.
