opIndex not callable using const Slice

[krox]

The following code does not compile.

struct Foo
{
	ContiguousSlice!(1, int) bar;

	int get(size_t i) const
	{
		return bar[i];
	}
}

The problem is that .opIndex cannot be called on a const object. There is an easy workaround, namely bar.toConst[i]. In other contexts, the toConst is called automatically (using some alias this construction). But here the compiler sees the non-const opIndex method and gives an error before even trying to use the alias this.

Calling toConst explicitly is easy to do but kinda unintuitive, because it is used here to remove a const attribute, not to add it. More precisely, it is used for the conversion from const Slice!int to Slice!(const int).

[9il]

fixed in v0.6.10