}

  /**
   * Returns a predicate that evaluates to {@code true} if the object being tested {@code equals()}
   * the given target or both are null.
   */
  public static <T extends @Nullable Object> Predicate<T> equalTo(@ParametricNullness T target) {
    return (target == null)
        ? Predicates.<T>isNull()
        : new IsEqualToPredicate(target).withNarrowedType();
  }

  /**

 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Predicates.alwaysTrue;
import static com.google.common.base.Predicates.equalTo;
import static com.google.common.base.Predicates.in;
import static com.google.common.base.Predicates.not;
import static com.google.common.collect.Maps.safeContainsKey;
import static com.google.common.collect.Maps.safeGet;

    }

    boolean hasAnyPositiveInfinity() {
      return Iterables.any(values, Predicates.equalTo(POSITIVE_INFINITY));
    }

    boolean hasAnyNegativeInfinity() {
      return Iterables.any(values, Predicates.equalTo(NEGATIVE_INFINITY));
    }

    boolean hasAnyNaN() {
      return Iterables.any(values, Predicates.equalTo(NaN));
    }

    boolean hasAnyNonFinite() {

        .addEqualityGroup(Predicates.equalTo(1), Predicates.equalTo(1))
        .addEqualityGroup(Predicates.equalTo(2))
        .addEqualityGroup(Predicates.<@Nullable Integer>equalTo(null))
        .testEquals();
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testIsEqualTo_serialization() {
    checkSerialization(Predicates.equalTo(1));
  }

  }

  public void testComposeOfPredicateAndFunctionIsAssociative() {
    Map<Float, String> m = ImmutableMap.of(4.0f, "A", 3.0f, "B", 2.0f, "C", 1.0f, "D");
    Predicate<? super Integer> h = Predicates.equalTo(42);
    Function<? super String, Integer> g = new HashCodeFunction();
    Function<Float, String> f = Functions.forMap(m, "F");

    Predicate<Float> p1 = Predicates.compose(Predicates.compose(h, g), f);