axiom-types

# Setup constraints for all defined types
Axiom::Types.finalize

# Create Name subtype
Name = Axiom::Types::String.new do
  minimum_length 1
  maximum_length 30
end

# Test if the string is a member of the type
Name.include?('a')       # => true
Name.include?('a' * 30)  # => true
Name.include?('')        # => false
Name.include?('a' * 31)  # => false