Super basic type checking functions in ruby.
module Type
include Kinda.module
end
Type[Float].call(1.0)
# => 1.0
Type[Float].call(1)
# => Kinda::ConstraintError: expected Float but given FixnumIn addition to any normal Ruby class the following custom types are available.
- Nil
- True
- False
- Bool
Type[Bool].call(true)
# => true
Type[Bool].call(false)
# => false
Type[Bool].call(nil)
# => Kinda::ConstraintError: expected [TrueClass, FalseClass] but given NilClassNew types can also be defined in terms of existing types.
require 'bigdecimal'
Decimal = [BigDecimal, Float]
Type[Decimal].call(BigDecimal.new('1.0'))
# => #<BigDecimal:7fdd2c3aa9b0,'0.1E1',9(18)>
MaybeDecimal = [Nil, Decimal]
Type[MaybeDecimal].call(1.0)
# => 1.0
Type[MaybeDecimal].call(nil)
# => nil
Type[MaybeDecimal].call(1)
# => Kinda::ConstraintError: expected [NilClass, BigDecimal, Float] but given FixnumBug reports and pull requests are welcome on GitHub at https://github.com/sbscully/kinda.
The gem is available as open source under the terms of the MIT License.