method

new

v1_8_7_72 - Show latest stable - 0 notes - Class: Generator

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What's this?

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.

Show source

# 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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