$ cat hello.ml
#!/usr/bin/env ocamlrun ocaml
let rec main = print_string "Hello World!\n"
$ ./hello.ml
Hello World!
$ ocaml hello.ml
Hello World!
$ ocamlc -o hello hello.ml
File "hello.ml", line 1, characters 0-1:
Error: Syntax error
$ ocamlopt -o hello hello.ml
File "hello.ml", line 1, characters 0-1:
Error: Syntax error
与 Erlang 类似,OCaml 允许在脚本模式下使用 shebangs,但在编译模式下会失败。OCaml 中是否有更惯用的 shebang,在编译期间不会触发语法错误?