Scala classic "88th: Scala uses for expressions to implement map, FlatMap, filter" notes

it's so ....  Come back at night suddenly saw into the huge manuscript, can't help to the three ye, and then nothing did 23 o'clock ...

88th: Scala uses the for expression to implement map, FLATMAP, filter

Goal:

For expression Implementation Map/flatmap/filter

Gains:

Map/flatmap/filter is a generic type

MORE:

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Scala classic "88th: Scala uses for expressions to implement map, FlatMap, filter" notes