by J_Shelby_J 11 hours ago
Wow that’s amazing. The partial equality implementation is really surprising.
One question about avoiding boolean parameters, I’ve just been using structs wrapping bools. But you can’t treat them like bools… you have to index into them like wrapper.0.
Is there a way to treat the enum style replacement for bools like normal bools, or is just done with matches! Or match statements?
It’s probably not too important but if we could treat them like normal bools it’d feel nicer.
I almost always prefer enums and matches! vs bool parameters. Another way is to implement a Trait that you find useful that encapsulates the logic. And don't forget you can do impl <Enum> {} blocks to add useful functions that execute regardless of which member of the enum you got.
enum MyType{
...
}
impl MyType{
pub fn is_useable_in_this_way(&self) -> bool{
// possibly ...
match self {...}
}
}
pub fn use_in_that_way(e: MyType) {
if e.is_useable_in_this_way() {...}
}
if let MyType::Member(x) = e {
...
}If let is probably the closest to a regular bool.
For ints you can implement the deref trait on structs. So you can treat YourType(u64) as a u64 without destructing. I couldn’t figure out a way to do that with YouType(bool).