How to perform 'Parallel Replace Substring' in OCaml.
(* Task: Parallel Replace Substring
(* Language: OCaml
let parallel_replace_substring() =
(* Implementation for Parallel Replace Substring
let result = ...; (* Initialize variable
(* TODO: Implement core logic here
(* Step 1: Prepare data
(* Step 2: Process Parallel Replace Substring
print_endline("Done");
;;