Missing CFMutableArray bindings and types
Currently bindings for CFMutableArrayRef are missing and like CFArray we will also need to wrap it in a type called CFMutableArray.
Is there a specific use case you want this for?
I would like to collect into a CFArray or CFMutableArray directly from an iterator instead of using a temporary Vec (https://github.com/sfackler/rust-security-framework/blob/master/security-framework/src/secure_transport.rs#L723). The problem is that CFArray does not implement FromIterator, and CFMutableArray does not exist. I think it will be easier to implement FromIterator for CFMutableArray.
I think I needed this once upon a time as well when I was writing something to avoid some temporaries.