*final* class member (D2)

[Robert Fraser]

Denton Cockburn wrote:
> On Wed, 13 Feb 2008 10:59:26 -0500, Denton Cockburn wrote:
> 
>> How do I do this?  I'm trying to create a class member here that needs to
>> be initialized in the constructor, but cannot be changed later.
>>
>> class A
>> {
>>    (const doesn't work) real delegate() dg; // this is that
>>    function;
>>
>>    this(real delegate() dg) { this.dg = dg; }
>> }
>>
>> class B
>> {
>>    real foo() { return 3.5; }
>> }
>>
>> class C
>> {
>>    real foo() { return 4.5; }
>> }
>>
>> void main()
>> {
>>    auto b = new B;
>>    auto a = new A(&b.foo);
>>    auto c = new C;
>>    a.fitness = &c.foo; // I want this to be an error
>> }
> 
> formatting issues:
> 
> (const doesn't work) real delegate() dg; // this is that
>    function;
> 
> should be:
> 
> (const doesn't work) real delegate() dg; // this is that function
> 

Use "final" :-)