Module: Algebrick::Types::List

Includes:
Enumerable
Defined in:
lib/algebrick/types.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.build(type, *items) ⇒ Object 



64
65
66
 
# File 'lib/algebrick/types.rb', line 64

def self.build(type, *items)
  items.reverse_each.reduce(EmptyList) { |list, item| self[type][item, list] }
end

Instance Method Details

#each(&block) ⇒ Object 



43
44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/algebrick/types.rb', line 43

def each(&block)
  return to_enum unless block_given?

  it = self
  loop do
    break if EmptyList === it
    block.call it.value
    it = it.next
  end

  self
end

#empty? ⇒ Boolean 



60
61
62
 
# File 'lib/algebrick/types.rb', line 60

def empty?
  !next?
end

#next? ⇒ Boolean 



56
57
58
 
# File 'lib/algebrick/types.rb', line 56

def next?
  self.next != EmptyList
end