gistfile1.txt

friend = hash_of.(name: scalar,
          family: hash_of.(name: scalar),
          hobbies: array_of.(scalar))
user = hash_of.({ name: scalar,
           emails: array_of.(scalar),
           friends: array_of.(friend)})
           
my_hash = {name: "Martin", emails: ["[email protected]"], friends: [{name: "Bob", family: {name: "Joe"}, hobbies: ["Golf", "Ping Pong"]}]}

Benchmark.measure {  100_000.times { user.(my_hash)} }
=> #<Benchmark::Tms:0x007f894b76d500
 @cstime=0.0,
 @cutime=0.0,
 @label="",
 @real=0.828742,
 @stime=0.0,
 @total=0.8199999999999998,
 @utime=0.8199999999999998>