OCaml - How do I convert int to string?

Question

How do I convert an int to a string? Example: 1 to "1".

Answer 1

Use the function string_of_int (see the documentation for Pervasives, the module containing the functions that are automatically made available in the top level namespace to al OCaml programs).

Answer 2

Another solution is to use the module Printf, which allows you to choose the format of printing:

Printf.sprintf "%d" 42

gives you "42".

But you might prefer using an octal, hexadecimal, binary, etc representation. For instance,

Printf.sprintf "%x" 42

gives you "2a" which is the hexadecimal representation of 42.

Printf.sprintf "0x%x" 42

would give you "0x2a".

See the Printf documentation for more details.