I'm currently trying to learn OCaml via the "Real World OCaml: Functional Programming for the Masses" textbook. I've reached the point of trying to build my first executable after playing inside utop, but the program keeps crashing in the following manner. The code itself is the exact same from the book:
open Base open Stdiolet rec read_and_accumulate accum = let line = In_channel.input_line In_channel.stdin in match line with | None -> accum | Some x -> read_and_accumulate (accum +. Float.of_string x)let () = printf "Total: %F\n" (read_and_accumulate 0.)And the error log after trying to build it with dune and running gives
Fatal error: exception Invalid_argument("Float.of_string ")Raised at Stdlib.invalid_arg in file "stdlib.ml", line 30, characters 20-45Called from Dune__exe__Main.read_and_accumulate in file "bin/main.ml", line 8, characters 44-61Called from Dune__exe__Main in file "bin/main.ml", line 11, characters 23-47I'll admit that I'm not too sure why Float.of_string seems to be the cause of the problem here, as it works just fine inside utop when I test it.
I should add that I'm running OCaml version 4.13.1 on Debian and that both Base and Stdio are installed. I can also add the screenshot below for clarification:
