comptime-is-arg-string.zig

pub inline fn isStr(comptime it: type) bool {
    return switch (@typeInfo(it)) {
        std.builtin.TypeId.Array => |ta| u8 == ta.child,
        std.builtin.TypeId.Pointer => |tp| u8 == tp.child or switch (@typeInfo(tp.child)) {
            std.builtin.TypeId.Array => |tpa| u8 == tpa.child,
            else => false,
        },
        else => false,
    };
}