ByteSize is an utility that easily makes bytes size representation and helps its arithmetic operations.

Example

```rust extern crate bytesize;

use bytesize::ByteSize;

fn bytearithmeticoperator() { let x = ByteSize::mb(1); let y = ByteSize::kb(100);

let plus = x + y; print!("{} bytes", plus.as_usize());

let minus = ByteSize::tb(100) - ByteSize::gb(4); print!("{} bytes", minus.as_usize()); } ```