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Constraints Liberate, Liberties Constrain — Runar Bjarnason

Scala World · 44.3K views · 2016-01-04 · 51:40

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Overview

Runar Bjarnason's Scala World talk argues that restraint and precision in components beat power and flexibility. Constraints on parts make them easier to compose into systems.

On Hacker News

HN recommends it as a talk that changes how you think about system design, and links it whenever constraints, abstraction or least power come up.

Recommended by 5 HN people across 5 months · HN mentions 2016–2025

Topics

Functional programmingSoftware architecture & design
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compositionabstractionscalaapi design

What people said

cinnamonheart · 2018-04 · Strong recommendation

I find Runar Bjarnason's talks to be interesting; one of my favourites is 'Constraints Liberate, Liberties Constrain': [VIDEO] The essence of it is that constraints actually allow for easier composition and more modularity. It had a real impact on the way I think about the design of systems.

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solidninja · 2024-06 · Recommendation

This reminds me of the excellent talk "Constraints Liberate, Liberties Constrain" [VIDEO] that is more about doing the programming rather than planning it as in the article, but with a similar approach.

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MaxBarraclough · 2024-04 · Recommendation

This reminds me of a great talk, Constraints Liberate, Liberties Constrain , by Runar Bjarnason. [0] Useful abstractions necessarily impose restrictions compared to a free-form 'all powerful' approach, but abstractions make it easier to perform/compose meaningful operations. A compiler can reason about an AST far more easily than it can reason about a machine-code sequence, for instance. A compiler typically converts from AST to machine-code pretty late in the game, as you want to take advantage of the utility of the abstraction, not the unlimited power of directly working with instructions. [0] [VIDEO]

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Sources

Video by Scala World, played through YouTube.

Data and selection notes

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