.values if is_a?

• source

a = ["apple", "bread", "cookie"]
ah = {"a":"apple", "b":"bread", "c":"cookie"}

def p_v(v)
  r = v.values if v.is_a?(Hash)
end

p p_v(a)
p p_v(ah)

• result

nil
["apple", "bread", "cookie"]

Refs.

• is_a?(Arry)メソッド
• https://docs.ruby-lang.org/ja/latest/method/Hash/i/values.html