c++ - PIMPL idiom and copy semantic -


i'm using library contains lot of classes builded using pimpl idiom. found bad, in opinion, classes implemented using std::shared_ptr implementation. means objects "implicitly shared". question is: correct way implement pimpl? or pimpl , "implicitly shared" 2 different idioms , therefore should not mixed default? correct way handle copy semantic?

imo, correct way implement pimpl use std::unique_ptr. it's more efficient , pimpl object should uniquely owned visible class, not shared (and don't have bother copy semantic).

pimpl , "implicitly shared" 2 different idioms indeed.

if still have use std::shared_ptr pimpl have explicitly define copy assignement operations (because compiler won't able generate correct ones).


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