why can't I compare a &str to a Rc<String>
-
not really: in the former situation you're looking for a type -- any type -- with the method "bar". it's a simple linear search down the deref chain in the latter you're looking for a type which satisfies certain constraints, which is much trickier
The method "bar" can come from a trait. In both cases the "certain constraints" you're looking to satisfy are "implements some trait". The only difference is special casing of the self type
-
-
I already have to write fmt::Debug::fmt(&foo, f) inside my recursive Debug impls instead of foo.fmt(f) when all that is known about foo is that it impls Debug so I'm guessing it's not simple
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.