cons

Lib.cons : 'a -> 'a list -> 'a list

Curried form of list cons operation.

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