CODEWITHSUNDEEP
ocaml
user3509086
user3509086

Reputation: 29

OCaml matching tuples

let add_information info = match info with 
    (int * int * int) -> int + int + int
;;

let result = add_information (1, 2, 3);;

print_int result;; (* should print 6 here *)

I believe you can match tuples just like you can with lists. Just not sure of the exact format.

Upvotes: 0

Views: 2388

Answers (2)

therealcobb
therealcobb

Reputation: 187

you could also declare a new variable saying something like: 

   let d,e,f = info in 
   d+e+f;;

Upvotes: 1

gsg
gsg

Reputation: 9377

Separate with ,s:

let add_info = function
  | a, b, c -> a + b + c

Because tuple matching is irrefutable - that is, there is no way for a match to fail - you can also bind tuples with let or in a function argument:

let a, b, c = calc_tuple () in a + b + c

Upvotes: 4

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