Created
July 4, 2018 21:10
Scala Cats Monoid
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| import cats.Monoid | |
| import cats.instances.int._ | |
| import cats.instances.option._ | |
| val a = Option(22) | |
| val b = Option(20) | |
| val r = Monoid[Option[Int]].combine(a, b) | |
| println(r) |
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