resolutionFramerate function

int? resolutionFramerate(
  1. String value
)

取 @ 后的帧率；无后缀或后缀非数字返回 null。

Implementation

int? resolutionFramerate(String value) {
  final at = value.indexOf('@');
  if (at < 0 || at == value.length - 1) return null;
  return int.tryParse(value.substring(at + 1));
}