Re: isMutable!(T) - intended/overlooked behaviour?

[Basile B. via Digitalmars-d]

On Monday, 11 January 2016 at 14:39:33 UTC, Liam McSherry wrote:

Are the results produced by the following program intended behaviour for isMutable!(T)?

---
void main()
{
    import std.stdio  : writeln;
    import std.traits : isMutable;

    struct S
    {
        enum size_t constant_0        = 0;
        enum const(size_t) constant_1 = 0;
    }

__traits(compiles, { S s; s.constant_0 = 1; }).writeln; // false

    isMutable!(typeof(S.constant_0)).writeln; // true
    isMutable!(typeof(S.constant_1)).writeln; // false
}
---

I know the documentation for isMutable!(T) says "Returns true if T is not const or immutable," but it would make sense to me if it returned false when given an enum. Is this maybe something to be corrected?

The question is what do you mean by enum ?

---
void main()
{
    import std.stdio  : writeln;
    import std.traits : isMutable;

    struct S
    {
        enum size_t constant_0        = 0;
        enum const(size_t) constant_1 = 0;
    }

    assert(!(is(typeof(constant_0) == enum)));
    assert(!(is(typeof(constant_1) == enum)));
}
---