Class: Monadt::Maybe

Inherits:
Object
  • Object
show all
Extended by:
Adt
Defined in:
lib/monadt/maybe.rb

Constant Summary collapse

Just = 
data :value
Nothing = 
data

Class Method Summary collapse

Methods included from Adt

match, with

Class Method Details

.bind(m, &blk) ⇒ Object 



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# File 'lib/monadt/maybe.rb', line 11

def bind(m, &blk)
  match(m,
    with(Just) { |v| blk.call(v) },
    with(Nothing) { m })
end

.return(a) ⇒ Object 



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# File 'lib/monadt/maybe.rb', line 17

def return(a)
  Maybe.just a
end