software-design/

Architecture, patterns, testing, refactoring and code review.

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software-design/the-observer-pattern-how-a-shop-tells-many-functions-about-one-order-w.md The observer pattern: how a shop tells many functions about one order without knowing them A shop that must email a receipt, update stock and add loyalty points ends up with one function that knows about everything. Every new… 5 min read · 27 Oct