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Dart语言抛出异常
main() { try { test_age(-2); } catch(e) { print('Age cannot be negative'); } } void test_age(int age) {
Dart语言Finally块
main() { int x = 12; int y = 0; int res; try { res = x ~/ y; } on IntegerDivisionByZeroException { print('Cannot divide by zero');
Dart语言on…catch块
main() { int x = 12; int y = 0; int res; try { res = x ~/ y; } on IntegerDivisionByZeroException catch(e) {
Dart语言使用catch块
main() { int x = 12; int y = 0; int res; try { res = x ~/ y; } catch(e) { print(e); } }
Dart语言使用ON块
main() { int x = 12; int y = 0; int res; try { res = x ~/ y; } on IntegerDivisionByZeroException { print('Cannot divide by zero');
Dart语言通用队列
import 'dart:collection'; void main() { Queue<int> queue = new Queue<int>(); print("Default implementation ${queue.runtimeType}");
Dart语言通用集(Set)
void main() { Set <int>numberSet = newSet<int>(); numberSet.add(100); numberSet.add(20);
Dart语言通用列表示例
void main() { List <String> logTypes = new List <String>(); logTypes.add(1); logTypes.add("ERROR");
Dart语言通用列表
void main() { List <String> logTypes = new List <String>(); logTypes.add("WARNING");