Pimpl idiom, multiple Inheritance and facet pattern
summary
C++11 library uses a shared_ptr pimpl with get_ptr downcast to make public objects immutable and shareable across containers, and it supports multiple inheritance with factory build functions returning private shared_ptr. Measured overhead is explicit: about 2x slower for direct access and 3x slower when downcasting to subclasses, which is acceptable because objects are constructed once. A facet pattern restricts which methods are visible per analysis view (by patient or by location) and the system works in production for clinical-data analysis.
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chapters (6)
- 0:00Introduction
- 1:02The solution
- 1:31Pimpl
- 2:08Present class relationships
- 3:09Simple Inheritance
- 5:18facet pattern
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