Class Pair<T>

java.lang.Object
uk.ac.starlink.util.Pair<T>

public class Pair<T> extends Object
Aggregates two objects of the same type. This utility class does not do anything clever.
Since:
12 Sep 2019
Author:
Mark Taylor
See Also:
  • Constructor Details

    • Pair

      public Pair(T item1, T item2)
      Constructor.
      Parameters:
      item1 - first item
      item2 - second item
  • Method Details

    • getItem1

      public T getItem1()
      Returns this pair's first item.
      Returns:
      item
    • getItem2

      public T getItem2()
      Returns this item's second item.
      Returns:
      item
    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object
    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object
    • toString

      public String toString()
      Overrides:
      toString in class Object
    • splitCollection

      public static <S> Pair<Collection<S>> splitCollection(Collection<S> in)
      Splits a collection into two constituent parts.
      Parameters:
      in - input collection; unaffected on exit
      Returns:
      pair of non-null collections (currently Lists), each containing about half of the input collection
    • splitArray

      public static <S> Pair<S[]> splitArray(S[] in)
      Splits an array into two consituent parts.
      Parameters:
      in - input array; unaffected on exit
      Returns:
      pair of non-null arrays, each containing about half of the input array