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Articles and technical notes from OPA Software — the team that builds mobile and web applications and keeps them running. Offices in Waterloo, Belgium and Athens, Greece.

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Iterator Pattern in Software Development

The Iterator pattern walks a collection without exposing how it stores its elements. Structure, a real-world analogy, a UML diagram, benefits and trade-offs. Sep 3, 2026

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Blog Interpreter Pattern in Software Development Sep 3, 2026 Blog Command Pattern in Software Development Sep 3, 2026 Blog Chain of Responsibility Pattern in Software Development Sep 3, 2026 Blog Behavioral Design Patterns in Software Development: A Bird’s Eye View Sep 3, 2026

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