const or immutable?

[Adam D Ruppe]

On Wednesday, 22 September 2021 at 20:06:59 UTC, Ali Çehreli 
wrote:
> tl;dr Do you use 'const' or 'immutable' by-default for 
> parameters and for local data?

well i often ignore it but `const` (or often better yet, `inout` 
if there's any relation to a member of yours or if you return it) 
is better on function arguments, and `immutable` is better on 
internal members.

The exception is when you are storing something from someone 
else, where immutable params might be more important. But if you 
are looking and not touching, const or `in` is good.

> Aside: If 'const' is welcoming, why do we type 'string' for 
> string parameters when we don't actually *require* immutable:

Unfortunate naming here... the convenient name encourages its use 
but it is indeed often suboptimal.