ceylon 学习 3 代码片段

"Run the module `demo`."
shared void run() {

//// 支持 span 换行
//print("hello world");
//
//print("hello
//       world");
//normalized String 规范化
//String message = "hello
//                  normalized";

//print(message.normalized);
// String  报错 因为 String name  没有 process.arguments.first
//String name = process.arguments.first; //compile error: String? is not assignable to String
//String greeting = "Hello, ``name``!";
//print(greeting);

//// 防止  name 没有找到 报 空指针异常
//String? name = process.arguments.first;
//String greeting;
//if (exists name) {
//	greeting = "Hello, ``name``!";
//}
//else {
//	greeting = "Hello, World!";
//}
//print(greeting);

//Counter counter = Counter(10.0,5.0);
//Counter a = counter.rotate(2.0);
//print(a.description);
//Counter counter = Counter(30.0,60.0,null);

//print(counter.procs);

//print(counter.description);

//print(counter.inc());

// get set 使用
// 方式一
//counter.name="cdcd";
//print(counter.name);
//// 方式 2
//counter.setNickNamen("finn");
//print(counter.getNickName());

//继承
LabeledPolar labelPolar = LabeledPolar(10.0,12.0,"labletest");
// 方法 重写
print(labelPolar.description);

// 流
//{String+} words = { "hello", "world" };
//{String+} moreWords = { "hola", "mundo",*words};
//print(words);
//print(moreWords);
//// 迭代
//for (word in moreWords) {
//	print(word);
//}
//// 索引 i
//for (i -> word in moreWords.indexed) {
//	print("``i``: ``word``");
//}
variable value counter = 0;
value stream = { for (i in 0:5) counter++ }; //curly braces means LAZY!
print(stream); //evaluate elements
print(stream); //reevaluate elements

//print(counter);
// 数组使用
//   String[] names =["cdd","finn","amy"];
//   for(name in names)
//   {
//    print("hello"+ name);
//   }

}

//注解方式1
shared void hello() {
print("Hello, World!");
}
/* The classic Hello World program */
shared void hello2() {
print("Hello, World!");
}