Class: Array

Inherits:

Object

Object
Array

show all

Extended by:: MonadPlus

Includes:: Monad

Defined in:: lib/do_notation/monads/array.rb

Class Method Summary collapse

Instance Method Summary collapse

#bind(&f) ⇒ Object

Methods included from MonadPlus

Methods included from Monad

#>>, #bind_const, included

Class Method Details

.mzero ⇒ `Object`



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# File 'lib/do_notation/monads/array.rb', line 16

def self.mzero
  []
end

.unit(x) ⇒ `Object`



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# File 'lib/do_notation/monads/array.rb', line 6

def self.unit x
  [x]
end

Instance Method Details

#bind(&f) ⇒ `Object`



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# File 'lib/do_notation/monads/array.rb', line 10

def bind &f
  map(&f).inject([]){ |a,b| a+b }
end