Add option.diff #178

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1. OndrejSpanel commented on May 22, 2024

   

   OndrejSpanel

   on May 22, 2024

   Last edited by OndrejSpanel

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   It can be even made a little bit more general:

   implicit class OptionValueOps[T](private val o: Option[T]) extends AnyVal {
     final def diff(that: Iterable[T]): Option[T] = {
       if (o.exists(that.contains)) None
       else o
     }
   }

   Note: o.exists(that.contains) should be more performant than that.exists(o.contains) when that.contains is more efficient than that.exists, e.g. for Set.