API documentation for the Rust `Stream` trait in crate `futures_core`.| docs.rs
A pointer which pins its pointee in place.| doc.rust-lang.org
A finite heterogeneous sequence, `(T, U, ..)`.| doc.rust-lang.org
References, `&T` and `&mut T`.| doc.rust-lang.org
The `Option` type. See the module level documentation for more.| doc.rust-lang.org