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ruurtjan/functional-dsl-blog-4.scala

Created May 1, 2020 09:47
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functional-dsl-blog-4.scala
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functional-dsl-blog-4.scala
sealed trait EmailFilter { self =>
def &&(that: EmailFilter): EmailFilter = EmailFilter.And(self, that)
def ||(that: EmailFilter): EmailFilter = (self.negate && that.negate).negate
def negate : EmailFilter = EmailFilter.Not(self)
}
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