Opinions on this syntax for enums?
Opinions on this syntax for enums?
I'm making a language with a lot of inspiration from rust and was experimenting with alternative enum syntax. It relies on literals to be types in order to convey information on the different options.
I don't really get on well with Typescript but having the ability to use literals as types is something I really liked as a lot of the times I use static string literals as errors. and having all the variants upcast through types makes it easier to do pattern matching.
Plain-text transcription of the image:
undefined
// using rust like enum syntax
Option<T> (
| "Some" T
| "None"
)
fn match_demo() {
let some_option = Option "Some" "text";
let none_option = Option "None";
match some_option {
"Some" "hello" => print("oh hi there"),
"Some" text => print("Option is {text}"),
"None" => print("Option is {text}"),
}
}
// Or maybe more experimental syntax
Option<T> (
| T
| ()
)
fn match_demo2() {
let opt = Option "something";
match opt {
"text" => "matching directly",
var => "bind to variable",
() => "nothing",
}
}