From: William James <w_a_x_man@...>
Date: 2006-09-08T16:40:46+09:00
Subject: Re: continuing the next iteration

YAD wrote:
> Paul Lutus wrote:
> > You may or may not have heard this, but jumping to a label is frowned upon
> There's nothing wrong with a structured jump without a label.
>
> btw, next is listed in the manual along with break, redo, and retry.
>
> > but there is a "Continuation" class that can jump out of a complex nested
> > structure.
> > http://www.rubycentral.com/book/ref_c_continuation.html
>
> Well, it's a little on the clunky side, but it works.
>
> def doRows (grid,char)
>    (0...3).each do |row|
>      callcc do |nextRow|
>        (0...3).each do |col|
> 	nextRow.call() if grid[row][col] != char
>        end
>        return true
>      end
>    end
>    return false
> end


def do_rows(grid, char)
  grid.each {|row|
    return true  if row.all?{|c| c==char}
  }
  return nil
end