Class: LazyList::Stream

Inherits:
Base
  • Object
show all
Defined in:
lib/lazy_list/stream.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#each, #empty?, #initialize

Constructor Details

This class inherits a constructor from LazyList::Base

Class Method Details

.cycle(a) ⇒ Object 



5
6
7
 
# File 'lib/lazy_list/stream.rb', line 5

def cycle(a)
  new.prepend(a).recur { |a| a }
end

Instance Method Details

#first ⇒ Object 



21
22
23
 
# File 'lib/lazy_list/stream.rb', line 21

def first
  LazyList.car(@list).call.call
end

#inspect ⇒ Object 



17
18
19
 
# File 'lib/lazy_list/stream.rb', line 17

def inspect
  "[" + take(5).map(&:inspect).join(", ") + "...]"
end

#prepend(a) ⇒ Object 



10
11
12
13
14
15
 
# File 'lib/lazy_list/stream.rb', line 10

def prepend(a)
  @has_contents = true
  f = lambda { a }
  @list = LazyList.cons f, @list
  self
end

#recur(&block) ⇒ Object 



31
32
33
34
35
 
# File 'lib/lazy_list/stream.rb', line 31

def recur(&block)
  @count = Float::INFINITY
  @list = _recur( first, &block )
  self
end

#rest ⇒ Object 



25
26
27
 
# File 'lib/lazy_list/stream.rb', line 25

def rest
  self.class.new LazyList.cdr(@list).call.call
end