flutter 数组 工具

flutter中对比两个数组相同

import 'package:collection/collection.dart';

Function eq = const ListEquality().equals;
print(eq([1,'two',3], [1,'two',3])); // => true

16进制打印数组

import 'package:sprintf/sprintf.dart';

static String toHexArray(List<int> tmp_rev2) {
    String sb = "";
    for (var value in tmp_rev2) {
      sb += sprintf("%02x ",[value]);
    }
    return sb;
}

从a数组中查询b数组是否存在及存在的位置

  static int indexOf(List<int> a, List<int> b, int offset) {
    int flag = -1;
    f1:
    for (int i = offset; i <= a.length - b.length; i++) {
      for (int i1 = 0; i1 < b.length; i1++) {
        if (a[i + i1] != b[i1]) {
          continue f1;
        }
      }
      flag = i;
      break;
    }
    return flag;
  }