Show HN: Motif – Scala-like pattern matching with Java 8

Re:Show HN: Motif – Scala-like pattern matching with Java 8 by subtenante on Wednesday July 22, 2015 @12:48PM (#9930743)

I use it especially for enums so it's like:

  MatchMap.of(someOptional, defaultValue)
    .whenEquals(MyEnum.VALUEX, v -> someFn(p1, p2))
    .whenEquals(MyEnum.VALUEY, v -> otherFn(p1, p2))
    .resolve();

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Re:Show HN: Motif – Scala-like pattern matching with Java 8 by johnlcox on Wednesday July 22, 2015 @02:33PM (#9931429)

I haven't tried it with enums, but it should still be possible with Motif. I'll have to add some tests.

  match(enumValOpt)
      .when(some(eq(MyEnum.VALUEX))).then(() -> someFn(p1, p2))
      .when(some(eq(MyEnum.VALUEY))).then(() -> otherFn(p1, p2))
      .orElse(defaultValue)
      .doMatch();

It's a little longer than your example since there is support for more than just Optional, but it's pretty similar.

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