在 Flutter 中 throw Exception('message') 与 throw 'message' 之间有什么实际区别吗？

Question

使用之间有什么实际区别吗：

throw Exception('message');

对

throw 'message';

什么时候想在flutter中抛出错误？

Answer 1

throw 'message' 抛出 String.

试图抓住它的呼叫者需要做：

try {
   throw 'message';
} on String catch (s) {
  ...
}

或者需要使用一揽子的、未键入的 catch 子句（which isn't recommended). Doing this would be very unusual and would not be behavior callers would expect. There is an only_throw_errors lint 对此发出警告。

throw Exception('message'); 抛出构造的 Exception 对象。这更典型。

在 Flutter 中 throw Exception('message') 与 throw 'message' 之间有什么实际区别吗？

Is there any practical difference between throw Exception('message') vs throw 'message' in Flutter?

error-handling

dart

flutter