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/post.scala

Created June 15, 2017 06:55
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post.scala
// successful downcasting
stringToIntPrism.getOption("22")
// res: Option[Int] = Some(22)
// failed downcasting
stringToIntPrism.getOption("abc")
// res: Option[Int] = None
// upcasting (always succeeds)
stringToIntPrism.reverseGet(22)
// res: String = 22
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