Module: Prelude::ProperList

Included in:
ProperRubyList
Defined in:
lib/prelude/proper_list.rb

Overview

$Id: proper_list.rb 34 2007-10-23 21:38:09Z prelude $

Requires (but does not implement) 4 functions a proper list just cannot do without.

Instance Method Summary collapse

Instance Method Details

#cons(v) ⇒ Object

Raises:



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# File 'lib/prelude/proper_list.rb', line 30

def cons(v)
  raise MissingMethodError.new("Method 'cons' is not implemented by #{self.class.name}")
end

#head ⇒ Object

Raises:



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# File 'lib/prelude/proper_list.rb', line 34

def head
  raise MissingMethodError.new("Method 'head' is not implemented by #{self.class.name}")
end

#null ⇒ Object

Raises:



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# File 'lib/prelude/proper_list.rb', line 42

def null
  raise MissingMethodError.new("Method 'null' is not implemented by #{self.class.name}")
end

#tail ⇒ Object

Raises:



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# File 'lib/prelude/proper_list.rb', line 38

def tail
  raise MissingMethodError.new("Method 'tail' is not implemented by #{self.class.name}")
end