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/* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #![cfg_attr(feature = "fatal-warnings", deny(warnings))] #![cfg_attr(feature = "cargo-clippy", deny(clippy::correctness))] #![cfg_attr(feature = "cargo-clippy", warn(clippy::pedantic))] #![cfg_attr(feature = "cargo-clippy", allow(clippy::match_bool))] #![cfg_attr(feature = "cargo-clippy", allow(clippy::if_not_else))] #![cfg_attr(feature = "cargo-clippy", allow(clippy::stutter))] #![cfg_attr(feature = "cargo-clippy", allow(clippy::similar_names))] #![cfg_attr(feature = "cargo-clippy", allow(clippy::use_self))] #![cfg_attr(feature = "cargo-clippy", allow(clippy::single_match_else))] // Note: If you change this remember to update `README.md`. To do so run `./tools/update-readme.sh`. //! # Rust Persistent Data Structures //! //! Rust Persistent Data Structures provides [fully persistent data structures](https://en.wikipedia.org/wiki/Persistent_data_structure) //! with structural sharing. //! //! ## Setup //! //! To use rpds add the following to your `Cargo.toml`: //! //! ```toml //! [dependencies] //! rpds = "<version>" //! ``` //! //! ## Data Structures //! //! This crate offers the following data structures: //! //! 1. [`List`](#list) //! 2. [`Vector`](#vector) //! 3. [`Stack`](#stack) //! 4. [`Queue`](#queue) //! 5. [`HashTrieMap`](#hashtriemap) //! 6. [`HashTrieSet`](#hashtrieset) //! 7. [`RedBlackTreeMap`](#redblacktreemap) //! 8. [`RedBlackTreeSet`](#redblacktreeset) //! //! ### `List` //! [](list/struct.List.html) //! //! Your classic functional list. //! //! #### Example //! //! ```rust //! use rpds::List; //! //! let list = List::new().push_front("list"); //! //! assert_eq!(list.first(), Some(&"list")); //! //! let a_list = list.push_front("a"); //! //! assert_eq!(a_list.first(), Some(&"a")); //! //! let list_dropped = a_list.drop_first().unwrap(); //! //! assert_eq!(list_dropped, list); //! ``` //! //! ### `Vector` //! [](vector/struct.Vector.html) //! //! A sequence that can be indexed. The implementation is described in //! [Understanding Persistent Vector Part 1](http://hypirion.com/musings/understanding-persistent-vector-pt-1) //! and [Understanding Persistent Vector Part 2](http://hypirion.com/musings/understanding-persistent-vector-pt-2). //! //! #### Example //! //! ```rust //! use rpds::Vector; //! //! let vector = Vector::new() //! .push_back("I’m") //! .push_back("a") //! .push_back("vector"); //! //! assert_eq!(vector[1], "a"); //! //! let screaming_vector = vector //! .drop_last().unwrap() //! .push_back("VECTOR!!!"); //! //! assert_eq!(screaming_vector[2], "VECTOR!!!"); //! ``` //! //! ### `Stack` //! [](stack/struct.Stack.html) //! //! A LIFO (last in, first out) data structure. This is just a [`List`](#list) in disguise. //! //! #### Example //! //! ```rust //! use rpds::Stack; //! //! let stack = Stack::new().push("stack"); //! //! assert_eq!(stack.peek(), Some(&"stack")); //! //! let a_stack = stack.push("a"); //! //! assert_eq!(a_stack.peek(), Some(&"a")); //! //! let stack_popped = a_stack.pop().unwrap(); //! //! assert_eq!(stack_popped, stack); //! ``` //! //! ### `Queue` //! [](queue/struct.Queue.html) //! //! A FIFO (first in, first out) data structure. //! //! #### Example //! //! ```rust //! use rpds::Queue; //! //! let queue = Queue::new() //! .enqueue("um") //! .enqueue("dois") //! .enqueue("tres"); //! //! assert_eq!(queue.peek(), Some(&"um")); //! //! let queue_dequeued = queue.dequeue().unwrap(); //! //! assert_eq!(queue_dequeued.peek(), Some(&"dois")); //! ``` //! //! ### `HashTrieMap` //! [](map/hash_trie_map/struct.HashTrieMap.html) //! //! A map implemented with a [hash array mapped trie](https://en.wikipedia.org/wiki/Hash_array_mapped_trie). //! See [Ideal Hash Trees](https://infoscience.epfl.ch/record/64398/files/idealhashtrees.pdf) for //! details. //! //! #### Example //! //! ```rust //! use rpds::HashTrieMap; //! //! let map_en = HashTrieMap::new() //! .insert(0, "zero") //! .insert(1, "one"); //! //! assert_eq!(map_en.get(&1), Some(&"one")); //! //! let map_pt = map_en //! .insert(1, "um") //! .insert(2, "dois"); //! //! assert_eq!(map_pt.get(&2), Some(&"dois")); //! //! let map_pt_binary = map_pt.remove(&2); //! //! assert_eq!(map_pt_binary.get(&2), None); //! ``` //! //! ### `HashTrieSet` //! [](set/hash_trie_set/struct.HashTrieSet.html) //! //! A set implemented with a [`HashTrieMap`](#hashtriemap). //! //! #### Example //! //! ```rust //! use rpds::HashTrieSet; //! //! let set = HashTrieSet::new() //! .insert("zero") //! .insert("one"); //! //! assert!(set.contains(&"one")); //! //! let set_extended = set.insert("two"); //! //! assert!(set_extended.contains(&"two")); //! //! let set_positive = set_extended.remove(&"zero"); //! //! assert!(!set_positive.contains(&"zero")); //! ``` //! //! ### `RedBlackTreeMap` //! [](map/red_black_tree_map/struct.RedBlackTreeMap.html) //! //! A map implemented with a [red-black tree](https://en.wikipedia.org/wiki/Red-Black_tree). //! //! #### Example //! //! ```rust //! use rpds::RedBlackTreeMap; //! //! let map_en = RedBlackTreeMap::new() //! .insert(0, "zero") //! .insert(1, "one"); //! //! assert_eq!(map_en.get(&1), Some(&"one")); //! //! let map_pt = map_en //! .insert(1, "um") //! .insert(2, "dois"); //! //! assert_eq!(map_pt.get(&2), Some(&"dois")); //! //! let map_pt_binary = map_pt.remove(&2); //! //! assert_eq!(map_pt_binary.get(&2), None); //! //! assert_eq!(map_pt_binary.first(), Some((&0, &"zero"))); //! ``` //! //! ### `RedBlackTreeSet` //! [](set/red_black_tree_set/struct.RedBlackTreeSet.html) //! //! A set implemented with a [`RedBlackTreeMap`](#redblacktreemap). //! //! #### Example //! //! ```rust //! use rpds::RedBlackTreeSet; //! //! let set = RedBlackTreeSet::new() //! .insert("zero") //! .insert("one"); //! //! assert!(set.contains(&"one")); //! //! let set_extended = set.insert("two"); //! //! assert!(set_extended.contains(&"two")); //! //! let set_positive = set_extended.remove(&"zero"); //! //! assert!(!set_positive.contains(&"zero")); //! //! assert_eq!(set_positive.first(), Some(&"one")); //! ``` //! //! ## Other Features //! //! ### Mutable Methods //! //! When you change a data structure you often do not need its previous versions. For those cases //! rpds offers you mutable methods which are generally faster: //! //! ```rust //! use rpds::HashTrieSet; //! //! let mut set = HashTrieSet::new(); //! //! set.insert_mut("zero"); //! set.insert_mut("one"); //! //! let set_0_1 = set.clone(); //! let set_0_1_2 = set.insert("two"); //! ``` //! //! ### Initialization Macros //! //! There are convenient initialization macros for all data structures: //! //! ```rust //! use rpds::*; //! //! let vector = vector![3, 1, 4, 1, 5]; //! let map = ht_map!["orange" => "orange", "banana" => "yellow"]; //! ``` //! //! Check the documentation for initialization macros of other data structures. //! //! ### Serialization //! //! We support serialization through [serde](https://crates.io/crates/serde). To use it //! enable the `serde` feature. To do so change the rpds dependency in your `Cargo.toml` to //! //! ```toml //! [dependencies] //! rpds = { version = "<version>", features = ["serde"] } //! ``` mod utils; #[macro_use] pub mod list; pub mod map; pub mod queue; pub mod set; pub mod stack; pub mod vector; pub use crate::list::List; pub use crate::map::hash_trie_map::HashTrieMap; pub use crate::map::red_black_tree_map::RedBlackTreeMap; pub use crate::queue::Queue; pub use crate::set::hash_trie_set::HashTrieSet; pub use crate::set::red_black_tree_set::RedBlackTreeSet; pub use crate::stack::Stack; pub use crate::vector::Vector;