Discussion Thread: DIP 1036--Formatted String Tuple Literals--Community Review Round 1

[Walter Bright]

The DIP mentions a problem with DIP1027:

   Window createWindow(string title, int width = 0, int height = 0);

   auto window = createWindow(i"Process debugger $pid");

and the pid value inadvertently being matched to `width`. The DIP says:

   "Without a way to detect this misuse"

There is a way, as the expansion will be:

    createWindow(tuple("Process debugger %s", pid));

and the compiler can warn if a tuple argument precedes a default argument. I do 
not necessarily agree, however, that this is a problem that needs solving, just 
that there are ways.