boost python - Why can't I pass T as HeldType to class_? -


according boost docs default heldtype t. should able explicitly pass t. cannot, because boost asks me provide public constructor class accepts arguments

pyobject*&, boost::reference_wrapper<const t>::type&

why? boost behaves if following rule applied:

if heldtype derived t, exposed constructor(s) must accept initial pyobject* argument refers python object contains heldtype instance, shown in example.

(source)

is bug or oversimplification in documentation?


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