Hasty Treat - Records and Tuples in JavaScript

Hasty Treat - Records and Tuples in JavaScript

In this Hasty Treat, Scott and Wes talk about records and tuples in javascript — what they are, why you might want to use them, and more! LogRocket - Sponsor LogRocket lets you replay what users do on your site, helping you reproduce bugs and fix issues faster. It’s an exception tracker, a session re-player and a performance monitor. Get 14 days free at logrocket.com/syntax. Show Notes ??? - 02:42 - Immutability 05:08 - Records Immutable object Syntax #{x: 1, y: 2} 05:56 - Tuples Immutable array Syntax #[1,2,3,4] 07:18 - For both Referred to as a compound primitive Can contain only primitives, not objects They are compared deeply by their contents rather than their identity assert(#{ a: 1 } === #{ a: 1 }); assert(#[1, 2] === #[1, 2]); assert(#{ a: 1, b: 2 } === #{ b: 2, a: 1 }); Potential for optimizations Optimizations for making deep equality checks fast Optimizations for manipulating data structures Works well with type systems Better integration with the debugger Accessed through normal record.scott object like syntax 13:39 - Stage 2 Links https://github.com/tc39/proposal-record-tuple Tweet us your tasty treats! Scott’s Instagram LevelUpTutorials Instagram Wes’ Instagram Wes’ Twitter Wes’ Facebook Scott’s Twitter Make sure to include @SyntaxFM in your tweets

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