Structs
FBox is a generic wrapper of a unary function. FBox lets you compose unary functions via a user friendly syntax and in a type-safe manner.
FBox works with functions that take ownership over their argument. This way you can exploit the ownership rules of Rust.
FBox is lazy. It only calls its function when you explicitly tell it to do so. You can call apply or apply_drop with a single argument, the type of which corresponds to the FIn type parameter of the FBox. The return type will correspond to the FOut type parameter.Traits
The
Apply trait makes it possible to apply a unary function inside a wrapper. The apply method does not take ownership over the wrapper, but it does take ownership over the argument.The
ApplyDrop trait works similarly to Apply, except the apply_drop method takes ownership over the wrapper.