An idea: "partial slice constants" to generalize testcase discovery

[newpavlov]

Similar idea which relies on attributes instead of introducing a new keyword and syntax:

Idea: global static variables extendable at compile-time

Following this discussion I thought I’ll describe a functionality which I think can be quite useful for some cases and AFAIK can not be implemented today using other means. In short I would like to propose an idea of static variables which can be extended by other crates. It can look like this: // crate `foo` // extendable static should be public and have type `&[T]` #[extendable] pub static ERROR_MSGS: &'static [(u32, &'static str)] = &[ (ERROR_CODE_1, ERROR_MSG_1), (ERROR_CODE_2, ERR…