Re: full copies on assignment

[Marc Schütz via Digitalmars-d-learn]

On Tuesday, 24 May 2016 at 20:58:11 UTC, John Nixon wrote:

On Tuesday, 24 May 2016 at 15:17:37 UTC, Adam D. Ruppe wrote:

On Tuesday, 24 May 2016 at 14:29:53 UTC, John Nixon wrote:

This naively doesn’t seem right because the RHS of an assignment should not be altered by it.

It's because the char[] being shallow copied still leads to mutable stuff.

What I typically do here is just add a method `dup` to the struct that deep copies. Then you do `CS cs = rhs.dup;` when you want to construct it, like you'd do with a copy of a naked array.

Thank you for this suggestion, perhaps a slightly neater workaround.

Or add an explicit constructor:

    struct CS {
        // ...
        this(const CS rhs) { this = rhs; }
    }

Then you can write:

    auto cs = CS(rhs);