class Dry::Types::Hash::Schema

def try(hash)
  if hash.is_a?(::Hash)
    success = true
    output  = {}
    begin
      result = try_coerce(hash) do |key, member_result|
        success &&= member_result.success?
        output[key] = member_result.input
        member_result
      end
    rescue ConstraintError, UnknownKeysError, SchemaError, MissingKeyError => e
      success = false
      result = e
    end
  else
    success = false
    output = hash
    result = "#{hash} must be a hash"
  end
  if success
    success(output)
  else
    failure = failure(output, result)
    block_given? ? yield(failure) : failure
  end
end