Class: Hamster::Realizable

Inherits:

Object

• Object
• Hamster::Realizable

Includes:

List

Defined in:

lib/hamster/list.rb

Overview

Common behavior for other classes which implement various kinds of ‘List`s

Direct Known Subclasses

Partitioned, Splitter::Left, Splitter::Right

Constant Summary

Constants included from List

List::CADR

Instance Method Summary

• #cached_size? ⇒ Boolean
• #empty? ⇒ Boolean
• #head ⇒ Object (also: #first)
• #initialize ⇒ Realizable constructor

  A new instance of Realizable.

• #realized? ⇒ Boolean
• #size ⇒ Object (also: #length)
• #tail ⇒ Object

Methods included from List

#<<, [], #add, #append, #at, #break, #chunk, #clear, #combination, #cycle, #delete, #delete_at, #drop, #drop_while, #dup, #each, #each_chunk, empty, #eql?, #fill, #flat_map, #flatten, from_enum, #group_by, #hash, #indices, #init, #inits, #insert, #inspect, #intersperse, #last, #map, #merge, #merge_by, #partition, #permutation, #pop, #pretty_print, #respond_to?, #reverse, #rotate, #sample, #select, #slice, #sort, #sort_by, #span, #split_at, #subsequences, #tails, #take, #take_while, #to_list, #transpose, #union, #uniq, #zip

Methods included from Enumerable

#<=>, #==, #compact, #each_index, #grep, #grep_v, #group_by, #inspect, #join, #partition, #pretty_print, #product, #reject, #sort_by, #sum, #to_set

Methods included from Enumerable

#to_list

Constructor Details

#initialize ⇒ Realizable

Returns a new instance of Realizable.

# File 'lib/hamster/list.rb', line 1387

def initialize
  @head, @tail, @size = Undefined, Undefined, nil
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Hamster::List

Instance Method Details

#cached_size? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/hamster/list.rb', line 1412

def cached_size?
  @size != nil
end

#empty? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/hamster/list.rb', line 1402

def empty?
  realize if @head == Undefined
  @size == 0
end

#head ⇒ Object Also known as: first

# File 'lib/hamster/list.rb', line 1391

def head
  realize if @head == Undefined
  @head
end

#realized? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/hamster/list.rb', line 1416

def realized?
  @head != Undefined
end

#size ⇒ Object Also known as: length

# File 'lib/hamster/list.rb', line 1407

def size
  @size ||= super
end

#tail ⇒ Object

# File 'lib/hamster/list.rb', line 1397

def tail
  realize if @tail == Undefined
  @tail
end