The future of lambda delegates

[BCS]

Walter Bright wrote:
> BCS wrote:
> 
>> BTW how do you construct a delegate literal inside of a class method 
>> that uses "this" as it's context, rather than the frame pointer?
>>
>> class Foo
>> {
>>     int i;
>>     int delegate() fig(){ return {return i;}; }
> 
> 
> It uses the frame pointer of fig() to access fig()'s this. Of course, 
> though, this will currently fail because fig() is exited before the 
> delegate is called.
> 

a.k.a. It can't be done?

>> //    int delegate() fig(){ return this.{return i;}; }  // this maybe?
>> }
>>
>> void main()
>> {
>>     auto foo = new Foo;
>>     auto farm = foo.fig;
>>
>>     foo.i = 5;
>>     auto i = farm(); // valid if context is "foo"
>>     assert(i == 5);
>> }