Assignment in ternary condition operator

[JN]

On Tuesday, 7 August 2018 at 19:58:40 UTC, Steven Schveighoffer 
wrote:
> On 8/7/18 3:18 PM, JN wrote:
>> [...]
>
> But operator precedence says that this is really:
>
> b = (a = (3 ? 4 : 5))
>
> It's a different thing than the if statement. In the if 
> statement, it's the *assignment* that is now the condition. 
> Here, it is not an assignment that is the condition, but `3`. 
> There is no common error that requires preventing assignment 
> from the result of an assignment.
>
> I realize that what you seeing is a typo from:
>
> b = a == 3 ? 4 : 5
>
> but the problem is that you are relying on precedence 
> incorrectly here. If you type:
>
> b = (a = 3) ? 4 : 5
>
> Then you get the error. D can't solve all the problems. Best 
> thing to do is to use parentheses to clarify what you want for 
> your condition rather than rely on default order of operations.
>
> -Steve

Ahhhh. I didn't think of that. Hmm, I guess a warning here would 
be nice then, or perhaps DScanner could mark such cases as 
suspicious :)