//! This crate provides a few miscellaneous utilities related to I/O:
//!
//! - `HandleOrSocket` types and traits for Windows, which abstract over
//! Windows `*Handle*` and their corresponding Windows `*Socket*` types and
//! traits.
//!
//! - `Grip` types and traits, which abstract over the aforementioned Windows
//! `HandleOrSocket` types and traits and their corresponding non-Windows
//! `Fd` types and traits.
//!
//! - `OwnedReadable`, `OwnedWriteable`, `BorrowedReadable`,
//! `BorrowedWriteable`, `RawReadable` and `RawWriteable`, which adapt a raw
//! `Fd`/`Handle` to implement the `Read` and `Write` traits, respectively.
//!
//! - `ReadWrite` traits, and supporting types, which provide abstractions over
//! types with one or two I/O resources, for reading and for writing.