Class: Unsound::Data::Nothing

Inherits:

Maybe

• Object
• Maybe
• Unsound::Data::Nothing

Defined in:

lib/unsound/data/maybe.rb

Instance Method Summary

• #>> ⇒ Data::Nothing (also: #and_then)

  A Noop.

• #fmap ⇒ Data::Nothing

  A Noop.

• #or_else(f = nil, &blk) ⇒ Data::Nothing, Data::Just

  Chain another operation which can result in a Maybe.

Methods inherited from Maybe

of

Instance Method Details

#>> ⇒ Data::Nothing Also known as: and_then

A Noop

Returns:

• (Data::Nothing)

# File 'lib/unsound/data/maybe.rb', line 44

def >>(*)
  self
end

#fmap ⇒ Data::Nothing

A Noop

Returns:

• (Data::Nothing)

# File 'lib/unsound/data/maybe.rb', line 37

def fmap(*)
  self
end

#or_else(f = nil, &blk) ⇒ Data::Nothing, Data::Just

Chain another operation which can result in a Maybe

Parameters:

• f (#call) (defaults to: nil) —

  the next operation

Returns:

• (Data::Nothing, Data::Just)

# File 'lib/unsound/data/maybe.rb', line 53

def or_else(f = nil, &blk)
  (f || blk).call
end