• Martin (9/9) Sep 13 2020 Hi,
• Paul Backus (2/6) Sep 13 2020 Yes, you can do this with `ref const`.

Martin <martin.brzenska googlemail.com> writes:

Hi,
i would like to create a function which takes the first parameter 
as a reference to a struct - but assure the calle that the 
reference is read-only. Can this be done?

If i am not mistaken, then the "in" Parameter Storage Class is 
what i want(?). But the documentation states that this feature 
should not be used.

For context: I want to write struct-methods outside the struct 
(like in golang).

Paul Backus <snarwin gmail.com> writes:

On Sunday, 13 September 2020 at 13:35:15 UTC, Martin wrote:
 Hi,
 i would like to create a function which takes the first 
 parameter as a reference to a struct - but assure the calle 
 that the reference is read-only. Can this be done?

Yes, you can do this with `ref const`.