I don't see how is that convenient? Java approach will be trivially extended with this JEP and this restriction will be lifted. C# approach probably will never be improved so it'll never be convenient to use.
I would love something akin to this JEP in C#, but I'd want it in a way that makes it very clear that you're executing code prior to the base class' fields being initialized.
Something along this lines of this
public Foo(int bar)
{
prector
{
var baz = bar * bar;
base(baz);
}
ctor
{
// Foo's constructor code
}
}
Since this and base are both keywords, and since () is not overloadable in C#, it adopt Java-like syntax for such calls without breaking backwards compatibility if it ever wants to do the same thing Java did.
