On Thursday, 23 November 2023 at 19:17:20 UTC, Antonio wrote:
```d
interface I {
bool check();
}
class A : I {
bool check() =>true;
}
class B : I {
bool check() =>false;
}
I aOrB(bool check) => check ? new A() : new B();
void main()
{
assert( aOrB(true).check );
}
```
Compiler error:
```d
x.d(11): Error: cannot implicitly convert expression `check ?
new A : new B` of type `object.Object` to `x.I`
```
I'm forced to explicitly write the cast this way
```d
I aOrB(bool check) => check ? cast(I) new A() : cast(I) new B();
```
But it is not necessary when I write same code using
if/else/return statements
```d
I aOrB(bool check){
if(check)
return new A();
else
return new B();
}
```
**Is it the expected behaviour for ternary conditional?**
