Coming back to the discussion about how to deal with constants. I had
been trying to follow TypeScript, leading to:
let name = [] # mutable
const name = [] # name immutable, list mutable
const! name = [] # name and list immutable
This is not actually following TypeScript, since TypeScript does not
have "const!".
I found an alternative in Dart by using "final". Java also uses
"final".
let name = [] # mutable
final name = [] # name immutable, list mutable
const name = [] # name and list immutable
This is less weird, isn't it?
Even though it's not found exactly this way in another language. Dart
uses "var name = []" for mutable. We could even go that way:
var name = [] # mutable
final name = [] # name immutable, list mutable
const name = [] # name and list immutable
Thus dropping "let" in Vim9. I've been making quite a few mistakes with
"let" in Vim9, since the meaning actually differs from "let" in legacy
Vim script. I tend to accidentally use it for assignments, even though
it's actually a declaration. Perhaps it's good to make the difference
clearer by not using "let" at all? It drops the idea of following
TypeScript, but we weren't doing that 100% anyway.
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