And laziness is really helpful in constructing fast data structures while mainta... | Hacker News

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		gensym on Jan 8, 2009 \| parent \| context \| favorite \| on: Real World Haskell And laziness is really helpful in constructing fast data structures while maintaining purity. Purely Functional Data Structures is a great read to see how this fits together.

blasdel on Jan 8, 2009 [–]

Laziness also scares people away from violating purity

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