method

new

v1_8_6_287 - Show latest stable - Class: Generator

new(enum = nil, &block)

public

Creates a new generator either from an Enumerable object or from a block.

In the former, block is ignored even if given.

In the latter, the given block is called with the generator itself, and expected to call the yield method for each element.

# File lib/generator.rb, line 69
  def initialize(enum = nil, &block)
    if enum
      @block = proc { |g|
        enum.each { |x| g.yield x }
      }
    else
      @block = block
    end

    @index = 0
    @queue = []
    @cont_next = @cont_yield = @cont_endp = nil

    if @cont_next = callcc { |c| c }
      @block.call(self)

      @cont_endp.call(nil) if @cont_endp
    end

    self
  end

new

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