Write a function to append two lists in OCaml.

Question

TJ · Accepted Answer

let rec append_list l1 l2 = match l1 with
  [] -> l2
  | h :: t -> h :: (append_list t l2)

Usage:
# append_list [1;2;3] [4;5]
- : int list = [1;2;3;4;5]

s · Answer

L1 @ L2

Anonym · Answer

let rec append (l1:'a list) (l2:'a list) : 'a list =
  match l1 with
  |[] -> l2
  |h::t -> h::append t l2

Anonym · Answer

let rec append (l1:'a list) (l2:'a list) : 'a list =
  match l1 with
  |[] -> l2
  |h::t -> h::append t l2

Anonym · Answer

```
let rec append (l1:'a list) (l2:'a list) : 'a list =
  match l1 with
  |[] -> l2
  |h::t -> h::append t l2
```

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