result

Result<T> — a success-or-error-string wrapper (like Rust's Result) for functions that can fail without throwing: ok/err construction, isOk/isErr/unwrap/unwrapOr, plus map/andThen/mapErr for chaining without unwrapping early.

Ok and err

import tinox.core.result;

class Main
{
    fnc divide(a: Int64, b: Int64) -> Result<Int64>
    {
        if b == 0
        {
            return Result<Int64>::err("division by zero");
        }
        return Result<Int64>::ok(a / b);
    }

    fnc main() -> Int32
    {
        let good: Result<Int64> = Main::divide(10, 2);
        if good.isOk()
        {
            println("10 / 2 = " + good.unwrap().toString());
        }

        let bad: Result<Int64> = Main::divide(10, 0);
        if bad.isErr()
        {
            println("error: " + bad.getError());
        }
        println("fallback: " + bad.unwrapOr(-1).toString());

        return 0;
    }
}