Is there any real reason to use "const"?

[forkit]

On Monday, 24 January 2022 at 10:06:49 UTC, rempas wrote:
> ..
> What do you guys think?

Well, if const were default, you could ask yourself, is there any 
real reason to use mutable :-)

If I see a function: void getuser(string pwd){} .. I get kinda 
concerned.

If I write a function: void getuser(string pwd){} .. I also get 
kinda concerned.

After hours of debugging, you eventually realise the root of your 
problem, was that pwd was not const.

Constraints on parameters help to ensure correctness. That is the 
value of const.

I wish @safe and const were default actually.