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Dart语言固定长度列表
void main() { var lst = new List(3); lst[0] = 12; lst[1] = 13; lst[2] = 11; print(lst); }
Dart语言返回值函数
void main() { print(test()); } String test() { // function definition return "hello world";
Dart语言调用函数
void main() { test(); } test() { //function definition print("function called"); }
Dart语言枚举
enum Status { none, running, stopped, paused } void main() { print(Status.values); Status.values.forEach((v) => print('value: $v, index: ${v.index}'));
Dart语言Runes类的构造函数
// Dart语言Runes类的构造函数 main() { Runes input = new Runes( ' \\u{1f605}'); print(new String.fromCharCodes(input));
Dart语言String.runes属性
void main(){ "A string".runes.forEach((int rune) { var character=new String.fromCharCode(rune);
Dart语言String.codeUnits属性
import 'dart:core'; void main(){ f1(); } f1() { String x = 'Runes'; print(x.codeUnits);
Dart语言String.codeUnitAt()方法
import 'dart:core'; void main(){ f1(); } f1() { String x = 'Runes'; print(x.codeUnitAt(0));
Dart语言符号
import 'dart:mirrors'; void main(){ Symbol lib = new Symbol("foo_lib"); String name_of_lib = MirrorSystem.getName(lib);
Dart语言Map.forEach()方法
void main() { var usrMap = {"name": "Tom", 'Email': '[email protected]'};
Dart语言Map.remove()方法
void main() { Map m = {'name':'Tom','Id':'E1001'}; print('Map :${m}');
Dart语言Map.clear()方法
void main() { Map m = {'name':'Tom','Id':'E1001'}; print('Map :${m}');
Dart语言Map.addAll()方法
void main() { Map m = {'name':'Tom','Id':'E1001'}; print('Map :${m}');
Dart语言映射isNotEmpty属性
void main() { var details = {'Usrname':'tom','Password':'pass@123'};
Dart语言映射isEmpty属性
void main() { var details = {'Usrname':'tom','Password':'pass@123'};
Dart语言映射length属性
// Dart语言映射length属性 void main() { var details = {'Usrname':'tom','Password':'pass@123'};