Exploring Type Safety Techniques in Haskell Programming
By
azhenley
Pure flour-power. Hearty enough to carry you through lunch.
Summary
The article discusses the concept of type safety in Haskell programming, focusing on the challenges and techniques to achieve it, such as the 'Parse, Don’t Validate' approach and the use of Haskell's newtype construct. It reflects on the broader goals of the Haskell school of program construction, like capturing invariants in the type system and making illegal states unrepresentable.
Key quotes
· 4 pulledHaskell programmers spend a lot of time talking about type safety.
The Haskell school of program construction advocates 'capturing invariants in the type system' and 'making illegal states unrepresentable.'
Almost exactly one year ago, I published Parse, Don’t Validate as an initial stab towards bridging that gap.
The ensuing discussions were largely productive and right-minded, but one particular source of confusion quickly became clear: Haskell’s newtype construct.
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