hash_each.rb

hash = {a: 10, b: 20, c: 30}

hash.each {|key| puts key}

# for the output of this, i'm getting:
# a
# 10
# b
# 20
# c
# 30
# all the documentation i have looked at suggests i should just be getting keys

# also used old school nasty hash:
grandpa_hash = { "a" => 10, "b" => 20, "c" => 30 }

# but i still get the same result with grandpa_hash.each {|key| puts key}