identity_wrap: x => => x

result: identity_wrap(identity_wrap(true))()()

print(result)


str: 'god'

result: str.
  split('').
  reverse().
  reverse().
  reverse()

print(result.join('') is 'dog')

result: str
  .split('')
  .reverse()
  .reverse()
  .reverse()

print(result.join('') is 'dog')