2min chapter

Signals and Threads cover image

Language design with Leo White

Signals and Threads

CHAPTER

Laziness in Haskell Is Like Wearing a Hair Shirt

Laziness in Haskell means that when you write an expression to compute something, it won't be evaluated immediately. It'll wait until you need the result of that computation before evaluating it. The modularity aspect of a camel are very similar. They kind of force you to take abstraction and interface it seriously. And from a language design perspective, it really forces you to take the idea of an interface seriously.

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