/* * call-seq: * dvector.each {|x| block } -> dvector * * Calls <i>block</i> once for each element in _dvector_, passing that * element as a parameter. * * a = Dvector[ 1, 0, -1 ] * a.each {|x| print x, " -- " } * * produces: * * 1 -- 0 -- -1 -- */ VALUE dvector_each(VALUE ary) {