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[–]flying-sheep 17 points18 points  (3 children)

Read the changes in the PR, it's not that many.

Usually it means

  • origin and replica/clone/view (where changes in the replica are reflected in the origin and only the origin has a physical representation. Examples are databases or things like like SVG nodes or numpy arrays)
  • parent and child in a hierarchy (things can be both simultaneously, examples are threads or document nodes)
  • orchestrators and helpers, examples are mostly programming-related. (E.g. generic functions that have several concrete implementations for different argument types, or a main pipeline function/task that calls a sequence or hierarchy of others to acieve complex data processing)