"if" statement

[Francesco Mecca]

https://run.dlang.io/is/zRcj59

```
alias Alg = Algebraic!(int, string);

void main()
{
	int n = 2;
     Alg value;

     value = n == 2 ? 2 : "string";
}
```

The original code used SumType but the effect is the same.

I suppose that I could write the following:

```
     if(n == 2) value = 2;
     else value = "string";
```

Is there a workaround for this that maintains a similar syntactic 
structure?
is this behaviour accepted or should the compiler translate the 
first case in the second?