Type systems: strong vs. weak, dynamic vs. static, and degrees of expressivity. Notes Talking about type systems! A broad and wide-ranging discussion about type systems in general, with specific examples from languages like PHP, JavaScript, Python, C, C++, Java, C♯, Haskell, and Rust! * What is a type system? * What are the kinds of things we get out of type systems? * What are the tradeoffs with different type systems? * What is Rust’s type system like? * What is especially attractive about Rust’s type system? A comment on the C integer/character string addition example: what’s actually happening there is that the character string is an array “under the covers,” and as such has an address. C silently switches to using the memory address, which is of course just an integer, when you try to add the two together. As I said on the show: the result is nonsense (unless you’re using this as a way of operating on memory addresses), but it’s compellable nonsense. In a stricter and stronger type system, memory addresses and normal numbers shouldn’t be addable! Sponsors * Aleksey Pirogue * Chris Palmer * Derek Morr * Hamza Sheikh * Lachlan Collins * Leif Arne Storset * Luca Schmid * Micael Bergeron * Pascal * Ralph Giles (“gillian”) * Ralph “FriarTech” Loizzo * reddraggone9 * Ryan Oleos * William Roe Become a sponsor * Patreon.com/newrustacean * Venmo.com/chriskrycho * Dwolla.com/hub/chriskrycho * Cash.me/$chriskrycho Contact * New Rustacean: - Twitter: @newrustacean - Email: [email protected] * Chris Krycho - GitHub: chriskrycho - Twitter: @chriskrycho