Delay.T
include Collection.Basic
val return : 'a -> 'a t
return x
creates a singleton container holding x
val fold :
'a t ->
init:'s ->
f:('s -> 'a -> ('s -> 'r) -> 'r) ->
('s -> 'r) ->
'r
fold xs ~init:s ~f
a delayed fold implementation. It is the same as a regular fold
except that function f
accepts an extra continuation argument, and the fold
expression returns a continuation.