how to solve this error in dart language: NoSuchMethodError : method not found: 'readLineSync'

Question

我是 Dart 语言的新手，当我想使用“stdin.readLineSync()”为命令行简单数字猜谜游戏获取用户输入时，出现此错误。我的代码是：

import 'dart:math';
import 'dart:io';

void main() {
  int guess;
  Random rand = new Random(); //create a random number generator
  int answer = rand.nextInt(100); //gets a random integer from 0 to 99
  do {
    print("Enter your guess:");
    String temp = stdin.readLineSync(); //read in from the keyboard
    guess = int.parse(temp); //convert String to integer
    if (guess < answer) {
      print("Too low!");
    } else if (guess > answer) {
      print("Too high!");
    }
  } while (guess != answer);
  print("You got it!");
}

此行的错误：String temp = stdin.readLineSync(); //从键盘读入我收到此通知：

Unhandled exception:
NoSuchMethodError : method not found: 'readLineSync'
Receiver: Instance of '_SocketInputStream@0x1da10ec4'
Arguments: []
#0      Object._noSuchMethod (dart:core-patch:1360:3)
#1      Object.noSuchMethod (dart:core-patch:1361:25)

Answer 1

您使用的是非常旧的 Dart 版本，因为 Dart 编辑器很久以前就被删除了。请使用最新版本的 Dart (2.10.3) 并使用 IntelliJ (dart.dev/tools/jetbrains-plugin) 或 VS Code (dart.dev/tools/vs-code)。感谢@julemand101。

how to solve this error in dart language: NoSuchMethodError : method not found: 'readLineSync'

how to solve this error in dart language: NoSuchMethodError : method not found: 'readLineSync'

stdin

input

readline

nosuchmethoderror

dart