Package io.github.jonestimd.util

Class JavaPredicates

  • public class JavaPredicates
extends java.lang.Object
    Utility methods for predicates.

    • Constructor Summary

      Constructors 
      Constructor Description
      JavaPredicates()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <T> java.util.function.Predicate<T> alwaysFalse()
      Return a predicate that always returns false.
      static <T> java.util.function.Predicate<T> alwaysTrue()
      Return a predicate that always returns true.
      static <T> java.util.function.Predicate<T> not​(java.util.function.Predicate<T> methodRef)
      Invert the result of a predicate.
      static <T,​R>
      java.util.function.Predicate<T>      		 onResult​(java.util.function.Function<T,​? extends R> function, java.util.function.Predicate<R> predicate)
      Chain a function and a predicate.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • JavaPredicates

        public JavaPredicates()

    • Method Detail

      • onResult

        public static <T,​R> java.util.function.Predicate<T> onResult​(java.util.function.Function<T,​? extends R> function,
                                                                   java.util.function.Predicate<R> predicate)
        Chain a function and a predicate. Useful for combining method references.

      • not

        public static <T> java.util.function.Predicate<T> not​(java.util.function.Predicate<T> methodRef)
        Invert the result of a predicate.

      • alwaysTrue

        public static <T> java.util.function.Predicate<T> alwaysTrue()
        Return a predicate that always returns true.

      • alwaysFalse

        public static <T> java.util.function.Predicate<T> alwaysFalse()
        Return a predicate that always returns false.