Structs, enums, tuples

Structs, enums, tuples

Run from the repository or distribution root. Put xen on PATH, or substitute ./bin/xen.

Run

xen check examples/types.xen
xen run examples/types.xen

Expected output

todo: read the guide
due in 2
answer: 42

Complete source

types.xen

// SPDX-License-Identifier: MIT OR Apache-2.0
struct Task { title: String, done: Bool }
enum Priority { Normal, Urgent(Int) }

impl Task {
    fn label(&self) -> String {
        return if self.done { "done: " + self.title } else { "todo: " + self.title };
    }
}

fn main() {
    let task = Task { title: "read the guide", done: false };
    println(task.label());
    let priority = Priority.Urgent(2);
    println(match priority {
        Priority.Normal => "normal",
        Priority.Urgent(days) => "due in " + int_to_str(days),
    });
    let (number, label) = (42, "answer");
    println(label + ": " + int_to_str(number));
}

Download file

Build an executable

xen build examples/types.xen -o app

Run the generated executable on a compatible Linux machine.