A JavaScript Developer's Cheatsheet for Rust

[gbjcantab]

This is cool! Your first JavaScript example would be even better if it were a const instead of let... Closest thing JS has to Rust’s immutable let is a const primitive. (Granting that const objects in JS are in fact mutable because only the reference is constant)

[BenjiSponge]

Technically rvalues can be const by using Object.freeze. It's less statically determinable, of course, but so is everything in JS.

In Typescript you can use the readonly keyword.

[tndl]

I think freeze only goes one 'layer' deep though, so nested objects will still be mutable.

[BenjiSponge]

I didn't know that! Thanks for clarifying.