Placeholder
PWI chapter
Method Design
Explicit visibility, why public members are never virtual, orchestration over implementation, and return contracts that state their cardinality.
The guidance is language-independent. Implementations differ where the underlying library differs; the concept does not.
C#
Explicit visibility, why public members are never virtual, orchestration over implementation, and return contracts that state their cardinality.
Python
Pure and autonomous methods, why public methods orchestrate rather than implement, consistent abstraction levels, and the split between actions and queries.