写了一些基础的操作，算是自己对这个模块的理解@H_403_3@

//hello world@H_403_3@

print("hello world");@H_403_3@

//变量整型@H_403_3@

varmyNum:Int=2// 这里后面声明的类型可以写也可以不写，它具有自动识别的能力，比如 = 2.0 那就是浮点型 = 2 就是整型@H_403_3@

myNum =4@H_403_3@

print(myNum)@H_403_3@

//常量浮点型XX:类型就是声明对象值是xx类型。@H_403_3@

letnum:Float=print(num)@H_403_3@

字符串@H_403_3@

letname ="dog"@H_403_3@

print(name)@H_403_3@

字符串拼接@H_403_3@

letlabel ="my name is"@H_403_3@

letwidth =94@H_403_3@

letwidthLabel = label +String(width)//String(width)是对width进行强转@H_403_3@

print(widthLabel)@H_403_3@

//字符串另一种拼接@H_403_3@

letapples =3@H_403_3@

letoranges =5@H_403_3@

letappleSummary ="i have\(oranges + apples) apple."@H_403_3@

print(appleSummary)@H_403_3@

@H_403_3@

数组字典@H_403_3@

varshoppingList = [String]()数组初始化; [这里是数组元素的类型]()这个括号 我理解为传参。。@H_403_3@

shoppingList = ["cat","dog""fish"]//也可以直接var shoppingList = ["cat","dog","fish"]@H_403_3@

shoppingList[1] ="hashi dog"@H_403_3@

print(shoppingList)@H_403_3@

字典@H_403_3@

varoccupations = [String://同数组概念， [元素类型]()参数 里面直接写key:value 最后一个键值对允许有个逗号@H_403_3@

occupations = [@H_403_3@

"name":"xiaoming",@H_403_3@

"sex":"nan",@H_403_3@

]@H_403_3@

occupations["years"] ="21"//对字典添加新键值对@H_403_3@

print(occupations)@H_403_3@

@H_403_3@

关于分号的问题 写或者不写都没有影响。@H_403_3@

有问题请留言 谢谢@H_403_3@