Doing buffered reads and writes

Reads and writes are the fundamental operations performed on I/O types such as files and streams and are very crucial for working with many types of system resources. In this section, we'll discuss different ways to do reads and writes to I/O in Rust. We'll first cover the core traits – Read and Write – which allow Rust programs to perform read and write operations on objects that implement these traits (which are also called readers and writers). Then, we'll see how to do buffered reads and buffered writes, which are more efficient for certain types of read and write operations.

Let's start with the basic Read and Write traits.

In line with the everything-is-a-file philosophy, the Rust Standard Library provides two traits – Read and Write – which provide a general interface for reading and writing inputs and outputs. This trait is implemented for different types of I/O, such as files, TcpStream,...