To use or not immutable?

[Dukc]

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.