containsKey method

bool containsKey(
  1. String key
)

检查是否包含 key

Implementation

bool containsKey(String key) {
  switch (mode) {
    case CacheMode.memory:
      return _memoryCache?.containsKey(key) ?? false;

    case CacheMode.persistent:
      return _persistentCache?.containsKey(key) ?? false;

    case CacheMode.hybrid:
      return (_memoryCache?.containsKey(key) ?? false) ||
          (_persistentCache?.containsKey(key) ?? false);
  }
}