Marc Mutz wrote:
> On Wednesday 20 January 2016 22:50:43 Kevin Kofler wrote:
>> All these are horrible and error-prone hacks that have obvious lifetime
>> issues. You are complaining about Qt containers because the detaching can
>> invalidate iterators. Well, the lifetime issues you introduce with the
>> above proposed solutions are much worse! And a caching mutable member
>> also destroys thread-safety (in addition to the obvious lifetime issue
>> that the next call surprisingly invalidates your existing reference).
>
> One word: QModelIndex.
And that class is the source of innumerable bugs. The fact that one Qt class
has such broken semantics is no excuse for putting them everywhere.
Kevin Kofler
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