class Enumerator

Public Class Methods

new(*args, &block) click to toggle source

Provides the ruby-1.9 block form of Enumerator, where you can write:

obj = Enumerator.new do |yielder|
  # ...
  yielder.yield(data)  # or: yielder << data
  # ...
end

When obj.each is called, the block is run once. It should call yielder.yield with each item it wishes to generate.

Example:

fib = Enumerator.new { |y|
  a = b = 1
  loop {   
    y << a
    a, b = b, a + b
  }
}  

fib.take(10)  #=> [1, 1, 2, 3, 5, 8, 13, 21, 34, 55]
# File lib/core/facets/enumerator.rb, line 37
def initialize(*args, &block)
  if block
    @body = block
    old_initialize(self, :_start)
  else
    old_initialize(*args)
  end
end
Also aliased as: old_initialize

Public Instance Methods

fx() click to toggle source
# File lib/core/facets/enumerator/fx.rb, line 8
def fx
  Functor.new do |op, *a, &b|
    map{ |e| e.send(op, *a, &b) }
  end
end

Private Instance Methods

old_initialize(*args, &block)
Alias for: new