#How do i construct a non-exhaustive enum?

1 messages · Page 1 of 1 (latest)

tender cape
#

For exhaustive enums I need to handle the rest of the values with else whilst I can see _ is also allowed but it's a compile error as in this example:

 switch (op) {
            1 => {
                current_value += 1;
            },
            2 => {
                current_value -= 1;
            },
            3 => {
                current_value *= current_value;
            },
            _ => unreachable,
        }

errors with :

 exercises\032_unreachable.zig:28:9: error: '_' prong only allowed when switching on non-exhaustive enums
        switch (op) {
        ^~~~~~
exercises\032_unreachable.zig:38:13: note: '_' prong here
            _ => unreachable,
            ^
exercises\032_unreachable.zig:28:9: note: consider using 'else'

What's a non-exhaustive enum?

junior fog
# 
const Op = enum(u8) {_};
#

but use else instead in your case