Vavr Kullanımı

Maven

Şu satırı dahil ederiz

<dependency>
   <groupId>io.vavr</groupId>
   <artifactId>vavr</artifactId>
   <version>0.10.4</version>
 </dependency>

Örnek

Şöyle yaparız

var result = Stream.of("java.lang.String", "ch.frankel.blog.Dummy", "java.util.ArrayList")
  .map(CheckedFunction1.liftTry(Class::forName))
  .map(Try::toEither)
       .partition(Either::isLeft)                              // 1
        .map1(left -> left.map(Either::getLeft))                // 2
        .map2(right -> right.map(Either::get));                 // 3
result._1().forEach(
  it -> System.out.println("not found: " + it.getMessage()));   // 4
result._2().forEach(
  it -> System.out.println("class: " + it.getName()));          // 4

Açıklaması şöyle

1. Partition the Stream of Either in a tuple of two Stream

2. Flatten the left stream from a Stream of Either to a Stream of Throwable

3. Flatten the right stream from a Stream of Either to a Stream of Class

4. Do whatever we want