Class: Enumerator

Inherits:
Object
  • Object
show all
Defined in:
lib/time_calc/value.rb

Overview

TODO: Replace with backports after 2.7 release

Constant Summary collapse

NOVALUE = 
Object.new.freeze

Class Method Summary collapse

Class Method Details

.produce(initial = NOVALUE) ⇒ Object 



16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/time_calc/value.rb', line 16

def self.produce(initial = NOVALUE)
  fail ArgumentError, 'No block given' unless block_given?

  Enumerator.new do |y|
    val = initial == NOVALUE ? yield() : initial

    loop do
      y << val
      val = yield(val)
    end
  end
end