dry-types 1.5.0

v1.5.0

on Ruby Gems

Added

• Wrapping constructor types 🎉 (@flash-gordon)

  Constructor blocks can have a second argument.
  The second argument is the underlying type itself:

  age_from_year = Dry::Types['coercible.integer'].constructor do |input, type|
    Date.today.year - type.(input)
  end
  age_from_year.('2000') # => 21

  With wrapping constructors you have control over "type application". You can even
  run it more than once:

  inc = Dry::Types['integer'].constructor(&:succ)
  inc2x = inc.constructor { _2.(_2.(_2.(_1))) }
  inc2x.(10) # => 13

• Fallbacks 🎉 (@flash-gordon)

  age = Dry::Types['coercible.ineger'].fallback(18)
  age.('10') # => 10
  age.('20') # => 20
  age.('abc') # => 18

  Fallbacks are different from default values: the later will be evaluated
  only when no input provided.

  Under the hood, .fallback creates a wrapping constructor.

• params.string as an alias for strict.string. This addition should be non-breaking (@flash-gordon)

• API for defining custom type builders similar to .default, .constructor, or .optional (@flash-gordon)

  # Making an alias for `.fallback`
  Dry::Types.define_builder(:or) { |type, v| type.fallback(v) }
  
  # Using new builder
  type = Dry::Types['integer'].or(-273)
  type.(:invalid) # => -273

Changed

• Inferring predicates from class names is deprecated. It's very unlikely your code depends on it,
  however, if it does, you'll get an exception with instructions. (@flash-gordon)

  If you don't rely on inferring, just disable it with:

  Dry::Types::PredicateInferrer::Compiler.infer_predicate_by_class_name false

  Otherwise, enable it explicitly:

  Dry::Types::PredicateInferrer::Compiler.infer_predicate_by_class_name true

Compare v1.4.0...v1.5.0