thiagofm/coolest_pattern_matching.rb

## coolest_pattern_matching.rb
# Ruby 3.1+

users = [
  { name: "Yukihiro Matsumoto", age: 57 },
  { name: "Kabosu the Shiba Inu", age: 16 },
  { name: "Thiago Massa", age: 33 }
]

def fetch_age_from_person(person, hash)
  hash => [*, {name: ^person, age: age}, *]

  age
end

fetch_age_from_person("Yukihiro Matsumoto", users)
# => 57

fetch_age_from_person("Kabosu the Shiba Inu", users)
# => 16
	# Ruby 3.1+

	users = [
	{ name: "Yukihiro Matsumoto", age: 57 },
	{ name: "Kabosu the Shiba Inu", age: 16 },
	{ name: "Thiago Massa", age: 33 }
	]

	def fetch_age_from_person(person, hash)
	hash => [, {name: ^person, age: age}, ]

	age
	end

	fetch_age_from_person("Yukihiro Matsumoto", users)
	# => 57

	fetch_age_from_person("Kabosu the Shiba Inu", users)
	# => 16