I Want Off Mr. Golang's Wild Ride(fasterthanli.me)

    newtype NotRobPike'sUUID = NotRobPike'sUUID UUID deriving newtype (ToJSON, FromJSON)

    int a;
    SomeException e_a = null;
    try {
        a = something();
    } except (SomeException e) {
        a = -1;
        e_a = e;
    }
    int b;
    SomeException e_b = null;
    try {
        b = something();
    } except (SomeException e) {
        b = -1;
        e_b = e;
    }
    if (e_a != null or e_b != null) { // don't mess that up because both a and b are "valid" here
        …
    }

    let result_a = something();
    let result_b = something();
    if let Err(_) = result_a.and(result_b) { // or pattern matching or something else
        …
    }

    try {
        externalCall()
    } except (LibraryException e} {
        throw MyException.from(e); // because that might want to dispatch between various sub-types
    }

    return externalCall();

    externalCall()?

    match externalCall() {
        Ok(value) => value,
        Err(error) => { return Err(From::from(error))); }
    }