Re^2: Fixing: Experimental keys on scalar is now forbidden

[ikegami]

it seems to be a question of why the extra braces are required.

The outer %{ ... } is a hash dereference.

The inner { ... } creates a hash and returns a reference to it.

In your first snippet, you have a hash dereference, but no hash.

[NetWallah]

Thanks for the clarification, ikegami (++).

The postfix syntax below also works, and is easier to read.

my @t = keys {map { $_ => 1 } qw|uno dos tres| }->%*;