isValidRank static method

bool isValidRank(
  1. String rank
)

验证 rank 字符串是否有效

Implementation

static bool isValidRank(String rank) {
  if (rank.isEmpty) return false;

  for (int i = 0; i < rank.length; i++) {
    if (!_base62Chars.contains(rank[i])) {
      return false;
    }
  }
  return true;
}