DIP1000: Scoped Pointers (Discussion)

[Dicebot via Digitalmars-d]

On 08/12/2016 01:24 PM, Robert burner Schadek wrote:
>> No, the DIP doesn't handle several levels of indirection.
> 
> What about:
> 
> struct Bar { int a; int b }
> auto rcs = RefCountedTree!(string,Bar)();
> 
> fcs["bar"].a = 1337;  // log n
> fcs["bar"].b = 1338;  // log n
> 
> ? I need to pay log n twice to assign two members

Note though that while it won't work with example of `RefCountedSlice`
implementation in DIP (which marks return value as scope reducing
lifetime to expression), it should be possible to instead mark method
itself (== hidden `this` argument) as `return scope` thus saying that
return value has same lifetime as `this`.



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