\DOC cons \TYPE {cons : 'a -> 'a list -> 'a list} \SYNOPSIS Curried form of list cons operation. \KEYWORDS Curry \DESCRIBE In some programming situations it is handy to use the "cons" operation in a curried form. Although it is easy to code up on demand, the {cons} function is provided for convenience. \FAILURE Never fails. \EXAMPLE { - map (cons 1) [[],[2],[2,3]]; > val it = [[1], [1, 2], [1, 2, 3]] : int list list } \ENDDOC