Lexicographic comparison of arrays (of chars)

[Per Nordlöw]

On Wednesday, 22 January 2020 at 15:11:09 UTC, Jacob Carlborg 
wrote:
> BTW, why don't you implement `opCmp` with the built-in 
> comparison operators. Those are going to get lower to a call to 
> `__cmp`. Something like this:
>
> int opCmp()(const scope typeof(this) that) const @nogc
> {
>     auto a = this[];
>     auto b = that[];
>     return a < b ? -1 : (a > b);
> }
>
> --
> /Jacob Carlborg

I presume

int opCmp()(const scope typeof(this) that) const @nogc
{
     scope const a = this[];
     scope const b = that[];
     return a < b ? -1 : (a > b);
}

is preferred.