static struct Foo
{
    ~this() pure nothrow @nogc { if (_ptr) ++*_ptr; }
    int* _ptr;
}
int[4] refs = [0, 1, 2, 3];
Foo[4] src = [Foo(&refs[0]), Foo(&refs[1]), Foo(&refs[2]), Foo(&refs[3])];
Foo[3] dst = void;

auto res = moveEmplaceSome(src[], dst[]);
assert(res.length == 2);

import std.algorithm.searching : all;
assert(src[0 .. 3].all!(e => e._ptr is null));
assert(src[3]._ptr !is null);
assert(dst[].all!(e => e._ptr !is null));