Equivalence 一种判定两个实例是否相等的策略
全路径:com.google.common.base
声明:
@GwtCompatible
public abstract class Equivalence<T>
equivalent
public final boolean equivalent(@Nullable T a, @Nullable T b) { if (a == b) { return true; } if (a == null || b == null) { return false; } return doEquivalent(a, b); }