[Python-ideas] Revisiting Immutable Mappings

Jonathan Fine jfine2358 at gmail.com
Thu Oct 11 13:43:06 EDT 2018

A link on https://en.wikipedia.org/wiki/Liskov_substitution_principle goes to
which has a very nice example (slides 14 and 15).

Slide 14: Is immutable Square a behavioural subtype of immutable
Rectangle? And vice versa?
Slide 15: Is mutable Square a behavioural subtype of mutable
Rectangle? And vice versa? And relationship between mutable and
immutable Square (resp Rectangle).


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