Method containsKeyImpl

output/java_guava/1.4.18/Maps.java:3573–3575

An admittedly inefficient implementation of Map#containsKey.

(Map<?, ?> map, @Nullable Object key)

  static boolean containsKeyImpl(Map<?, ?> map, @Nullable Object key) {
    return Iterators.contains(keyIterator(map.entrySet().iterator()), key);
  }

  /**
   * An implementation of {@link Map#containsValue}.