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src/java.base/share/classes/java/util/function/BinaryOperator.java

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*** 20,33 **** * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ ! package java.util.function; import java.util.Objects; ! import java.util.Comparator; /** * Represents an operation upon two operands of the same type, producing a result * of the same type as the operands. This is a specialization of * {@link BiFunction} for the case where the operands and the result are all of --- 20,33 ---- * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ ! package javany.util.function; import java.util.Objects; ! import javany.util.Comparator; /** * Represents an operation upon two operands of the same type, producing a result * of the same type as the operands. This is a specialization of * {@link BiFunction} for the case where the operands and the result are all of
*** 41,62 **** * @see BiFunction * @see UnaryOperator * @since 1.8 */ @FunctionalInterface ! public interface BinaryOperator<T> extends BiFunction<T,T,T> { /** * Returns a {@link BinaryOperator} which returns the lesser of two elements * according to the specified {@code Comparator}. * * @param <T> the type of the input arguments of the comparator * @param comparator a {@code Comparator} for comparing the two values * @return a {@code BinaryOperator} which returns the lesser of its operands, * according to the supplied {@code Comparator} * @throws NullPointerException if the argument is null */ ! public static <T> BinaryOperator<T> minBy(Comparator<? super T> comparator) { Objects.requireNonNull(comparator); return (a, b) -> comparator.compare(a, b) <= 0 ? a : b; } /** --- 41,62 ---- * @see BiFunction * @see UnaryOperator * @since 1.8 */ @FunctionalInterface ! public interface BinaryOperator<any T> extends BiFunction<T,T,T> { /** * Returns a {@link BinaryOperator} which returns the lesser of two elements * according to the specified {@code Comparator}. * * @param <T> the type of the input arguments of the comparator * @param comparator a {@code Comparator} for comparing the two values * @return a {@code BinaryOperator} which returns the lesser of its operands, * according to the supplied {@code Comparator} * @throws NullPointerException if the argument is null */ ! public static <any T> BinaryOperator<T> minBy(Comparator<? super T> comparator) { Objects.requireNonNull(comparator); return (a, b) -> comparator.compare(a, b) <= 0 ? a : b; } /**
*** 67,76 **** * @param comparator a {@code Comparator} for comparing the two values * @return a {@code BinaryOperator} which returns the greater of its operands, * according to the supplied {@code Comparator} * @throws NullPointerException if the argument is null */ ! public static <T> BinaryOperator<T> maxBy(Comparator<? super T> comparator) { Objects.requireNonNull(comparator); return (a, b) -> comparator.compare(a, b) >= 0 ? a : b; } } --- 67,76 ---- * @param comparator a {@code Comparator} for comparing the two values * @return a {@code BinaryOperator} which returns the greater of its operands, * according to the supplied {@code Comparator} * @throws NullPointerException if the argument is null */ ! public static <any T> BinaryOperator<T> maxBy(Comparator<? super T> comparator) { Objects.requireNonNull(comparator); return (a, b) -> comparator.compare(a, b) >= 0 ? a : b; } }
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