containsKey method

bool containsKey(
  1. String? key
)

Returns true if key is present and not expired.

Implementation

bool containsKey(String? key) {
  if (key == null) return false;
  final item = _cache[key];
  if (item == null) return false;
  if (item.isExpired) {
    _evict(key);
    return false;
  }
  return true;
}