<s>[INST] What is the purpose of data immutability in computer programming, and how does it benefit developers? [/INST] In computer programming, data immutability refers to the characteristic of data that cannot be modified after it has been created. Once created, the data's value cannot be changed, only replaced with a new value.

The purpose of data immutability is to create a more predictable and stable codebase by minimizing side effects, making it easier to reason about and test code, and reducing the risk of bugs caused by accidental modifications of shared data. This is particularly useful in multi-threaded or distributed systems, where multiple threads or nodes may be trying to modify the same data simultaneously, which can lead to race conditions and other concurrency issues.

By enforcing data immutability, developers can ensure that code is easier to maintain and debug, and that it is less prone to bugs caused by unexpected changes to data. Immutability can also help with performance optimization, as it allows for more efficient memory management and can enable more efficient caching and memoization techniques.

Some programming languages, such as functional programming languages like Haskell and Clojure, place a strong emphasis on data immutability and provide built-in support for immutable data structures. Other languages, such as JavaScript and Python, do not enforce immutability by default, but still provide ways for developers to create immutable data structures and enforce immutability through coding conventions and best practices.</s>\ <s>[INST] Speaking of threading, I've heard Rust was particularly good for it. Does Rust enforce data immutability between threads, or does it use other methods for it? What are all the methods Rust uses to ensure thread safety? [/INST] Rust uses several methods to ensure thread safety¹³⁴. One of them is enforcing data immutability between threads by default¹. Another one is using traits like Send and Sync to indicate whether a type can be safely transferred or shared between threads³. A third one is using smart pointers like Arc and Mutex to manage shared mutable data⁴.

Are you looking for more details on any of these methods?

Source: Conversation with Bing, 2023/03/02(1) thread-safety in Rust | The Complete Rust Programming Reference Guide. https://subscription.packtpub.com/book/application-development/9781838828103/8/ch08lvl1sec71/thread-safety-in-rust Accessed 2023/03/02.
(2) Fearless Concurrency with Rust | Rust Blog. https://blog.rust-lang.org/2015/04/10/Fearless-Concurrency.html Accessed 2023/03/02.
(3) Understanding Rust Thread Safety - Customer Engagement Blog. https://onesignal.com/blog/thread-safety-rust/ Accessed 2023/03/02.
(4) thread-safety in Rust | The Complete Rust Programming Reference Guide. https://subscription.packtpub.com/book/application-development/9781838828103/8/ch08lvl1sec71/thread-safety-in-rust Accessed 2023/03/02.
(5) Using Threads to Run Code Simultaneously - Rust. https://doc.rust-lang.org/book/ch16-01-threads.html Accessed 2023/03/02.</s>\ <s>[INST] Yes I would like to know more on (5) Using Threads to Run Code Simultaneously.
Please tell me the top three methods for Using Threads to Run Code Simultaneously include all best practices.
Explain it to someone that is not a developer. [/INST] 