Revisions to filter + map api design

forgot some parens looks like thx

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edited Mar 5, 2019 at 16:50

Java has the Optional::stream function, and streams have flatMap. These two together will let you write java code that is very similar to the JavaScript code in https://softwareengineering.stackexchange.com/a/387859/3307

values.stream()
      .flatMap( v -> (include(v) ? Optional.empty() : Optional.of(v*2)).stream() )

// added some parens

Java has the Optional::stream function, and streams have flatMap. These two together will let you write java code that is very similar to the JavaScript code in https://softwareengineering.stackexchange.com/a/387859/3307

values.stream()
      .flatMap( v -> (include(v) ? Optional.empty() : Optional.of(v*2)).stream() )

// added some parens

Java has the Optional::stream function, and streams have flatMap. These two together will let you write java code that is very similar to the JavaScript code in https://softwareengineering.stackexchange.com/a/387859/3307

values.stream()
      .flatMap( v -> (include(v) ? Optional.empty() : Optional.of(v*2)).stream() )

forgot some parens looks like thx

Source Link

user290257

Java has the Optional::stream function, and streams have flatMap. These two together will let you write java code that is very similar to the JavaScript code in https://softwareengineering.stackexchange.com/a/387859/3307

values.stream()
      .flatMap( v -> (include(v) ? Optional.empty() : Optional.of(v*2)).stream() )

// added some parens

Java has the Optional::stream function, and streams have flatMap. These two together will let you write java code that is very similar to the JavaScript code in https://softwareengineering.stackexchange.com/a/387859/3307

values.stream()
      .flatMap( v -> (include(v) ? Optional.empty : Optional.of(v*2)).stream() )

Java has the Optional::stream function, and streams have flatMap. These two together will let you write java code that is very similar to the JavaScript code in https://softwareengineering.stackexchange.com/a/387859/3307

values.stream()
      .flatMap( v -> (include(v) ? Optional.empty() : Optional.of(v*2)).stream() )

// added some parens

Source Link

answered Mar 5, 2019 at 2:25

Java has the Optional::stream function, and streams have flatMap. These two together will let you write java code that is very similar to the JavaScript code in https://softwareengineering.stackexchange.com/a/387859/3307

values.stream()
      .flatMap( v -> (include(v) ? Optional.empty : Optional.of(v*2)).stream() )

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