Spencer Lyon

Scala Notes

· by Spencer Lyon · Read in about 1 min · (50 Words)

Scala

Notes from «Functional Programming in Scala»

The Option class in Option.scala and the RNG class in State.scala have examples of using flatMap to implement map2. The pattern is common, but a bit weird. Stare at it for a while if you want to figure out how powerful flatMap is.

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