Mostly Harmless Docs/Hashes
my %h = 'a' => 1, 'b' => 'two', 'c' => 3;
# Same. Fat-comma autoquotes what's on its left.
%h = a => 1, b => 'two', c => 3;
%h = :a(1), :b('two'), :c(3); # same
%h = :a(1), :b<two>, :c(3); # same (Pair ctor shorthand autoquotes)
# Same
my %h = {};
%h{'a'} = 1;
%h<b> = 'two';
%h<c> = 3;
# You can also use .push on a hash, which adds additional
# values on a key by creating a list and pushing to that:
my %h2 = {};
%h2.push('a', 11) # ("a" => 11).hash
%h2.push('b', 1) # ("a" => 11, "b" => 1).hash
%h2.push('a', 22) # ("a" => [11, 22], "b" => 1).hash
%h2.push('a', 33) # ("a" => [11, 22, 33], "b" => 1).hash
%h<b> #=> two
%h{'b', 'a'} #=> two 1
%h<b a> #=> same, but more convenient syntax
%h.exists('a') #=> True, if the hash has a key 'a' in it.
"hi %h<a> bye" #=> hi 1 bye
"hi {%h} bye" #=> hi a 1 b two c 3 bye
%h.delete('b') # deletes the :b<two> pair from the hash
%h.perl #=> ("a" => 1, "c" => 3).hash
%h.elems #=> 2 (number of elements/Pairs)
%h.keys #=> a c
%h.values #=> 1 3Iterating over a hash is covered in Control Structures.
