Interesting user mistake

[Mint via Digitalmars-d]

On Thursday, 3 September 2015 at 18:31:59 UTC, Meta wrote:
>
> Worse than useless; it doesn't even behave as you would expect.
>
> import std.stdio;
>
> void main()
> {
> 	auto a = -1;
> 	writeln(+a); //Prints -1
>         writeln(-a); //Prints  1
> }
>
> At least unary - does something.

I mean, if behaves exactly as I'd expect. +(-1) must equal -1, as 
-(-1) produces +1.

Also, recall that you can overload the unary + operator, so it 
may behave differently for some aggregate types.