• Jack (5/5) Dec 09 2020 I'm coding with visual studio code and now it shows a yellow mark
• Dukc (8/10) Dec 09 2020 There are downsides, Jonathan Davis has written about them:

Jack <jckj33 gmail.com> writes:

I'm coding with visual studio code and now it shows a yellow mark 
on variables that is never modified and that could be marked as 
const or immutable. I think that makes sense, so I think I'll be 
using it. Do you use it in your code base? are there some design 
flaws, like there's in C++'s const, which I'm not aware of?

Dukc <ajieskola gmail.com> writes:

On Wednesday, 9 December 2020 at 16:47:43 UTC, Jack wrote:
 Do you use it in your code base? are there some design flaws, 
 like there's in C++'s const, which I'm not aware of?

There are downsides, Jonathan Davis has written about them: 
http://www.jmdavisprog.com/articles/why-const-sucks.html

But the downside of D's `const` or `immutable` are mainly that 
you can't use them everywhere you might wish to. A good rule of 
thumb is that if you can get it to pass compilation as `const` or 
`immutable` without any hacks, there is no problem going ahead 
with it.