Dr. Felix Tobias Schindler authored 7 years ago and René Fritze committed 7 years ago

This reverts commit dd9bd39c3febe7141a0385a0976a3d026f099df9,
as it produces undesirable warnings if the walker was
appended to another walker.

Dr. Felix Tobias Schindler authored 7 years ago and René Fritze committed 7 years ago

To be used as in `walker.append(new MyFunctor(...))`.

Dr. Felix Tobias Schindler authored 7 years ago and René Fritze committed 7 years ago

This reverts commit 79e3ace9aa433309b7ffab418d853e7850dd993a, as we
decided against it in favor of nicer `append()` signatures.

It is now a user error to create them as something else.
You will get a std::bad_weak_ptr exception if you do.
This also 'fixes' the behaviour of functors on copied walkers

which is examplary of Functors with result state