String Pools / Strings Interning

Features

• quick Deref<str> implementation - one pointer resolution, one comparison, and one pointer increment
• thin [PoolStr] type - a pointer
• The pool is deallocated only when every object referencing it have been dropped.
• no_std, but alloc is required

Example: Initiating a fetch from github

```rust

use {strpool::{Pool, PoolStr}, core::ops::Deref};

// no need for mutability, the pool uses atomic operations let pool = Pool::new();

// use Pool::intern(&self, &str) to insert a string slice into the pool // if the string was already present, that PoolStr will be reused. let pool_string = pool.intern("Hello world!");

// you can obtain a &str with the Deref implementation asserteq!(poolstring.deref(), "Hello world!"); // Hash, Eq, Debug, Display are implemented as well.

// you can use Pool::find(&self, &str) to check if the pool contains a string assert_eq!(pool.find("oh hi mark"), None);

// the empty string doesn't rely on a pool, it's always there assert_eq!(pool.find(""), Some(PoolStr::empty())); ```

Internal Memory Structure (Example)