Care to share some examples / use cases where using these language characteristics can result in better, more expressive, more readable code?
(Not saying there aren't. I've been wondering about it myself and am genuinely curious)
Thanks!
Nope they use const to define immutable references, the same way that val/var define mutable references.
If you don't understand the difference between mutability of a reference and mutability of the value it refers to, JavaScript is far from the only language you’ll have a problem with.
No, you clearly don't.
> The problem is that you can completely change the shape of the object that’s “const”
“const” is not a feature of objects, but of the reference to a value (which may or may not be an object).
You can't change the reference at all (unlike a var/let references), hence it is constant.
Object immutability is orthogonal to reference immutability and is attained by Object.freeze().
In C for ex.
const int* p
int* const p