Class: Unsound::Data::Left

Inherits:

Either

• Object
• Either
• Unsound::Data::Left

Defined in:

lib/unsound/data/either.rb

Instance Method Summary

• #>> ⇒ Data::Left (also: #and_then)

  A Noop.

• #either(f, _) ⇒ Object

  Call a function on the value in the Left.

• #fmap ⇒ Data::Left

  A Noop.

• #or_else(f = nil, &blk) ⇒ Data::Left, Data::Right

  Chain another operation which can result in a Either.

Methods inherited from Either

of

Instance Method Details

#>> ⇒ Data::Left Also known as: and_then

A Noop

Returns:

• (Data::Left)

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

def >>(*)
  self
end

#either(f, _) ⇒ Object

Call a function on the value in the Unsound::Data::Left

Parameters:

• f (#call) —

  a function capable of processing the value

• _ (#call) —

  a function that will never be called

# File 'lib/unsound/data/either.rb', line 61

def either(f, _)
  f[value]
end

#fmap ⇒ Data::Left

A Noop

Returns:

• (Data::Left)

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

def fmap(*)
  self
end

#or_else(f = nil, &blk) ⇒ Data::Left, Data::Right

Chain another operation which can result in a Either

Parameters:

• f (#call) (defaults to: nil) —

  the next operation

Returns:

• (Data::Left, Data::Right)

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

def or_else(f = nil, &blk)
  (f || blk)[value]
end