也就是参数 receiveAction 方法 function customerSayDogInfo(receiveAction: (params: { dogAge: number; dosKind: string; dogName: string }) => any) { const dogInfo = { dogAge: 1, dosKind: "husky", dogName: "狗蛋", } receiveAction(dogInfo) } // ts 类型校验通过,staffGetDogInfo 可以...
}typeStringOrNumberFunc=(ns:string|number) =>void;letfunc:StringOrNumberFunc= fn;// 不能将类型“(x: string) => void”分配给类型“StringOrNumberFunc”。// 参数“x”和“ns” 的类型不兼容。// 不能将类型“string | number”分配给类型“string”。// 不能将类型“string | number”分配给类...
/** * Convert first character of string literal type to lowercase */ type Uncapitalize<S extends string> = intrinsic; 1. 2. 3. 4. 5. type UncapitalizeExample = Uncapitalize<"ABC">; /** * CapitalizeExample * aBC */ 1. 2. 3. 4. 5. 6. 拓展 TypeScript中常用的一些语法以及概念。泛...
// 通过接口(interface) 声明对象类型interfaceInfoType{readonlyname:string// 只读属性age?:number// 可选属性height:number}// 指定对象的类型constinfo:InfoType= {name:'zhangsan',age:20,height:170}console.log(info.name);// info.name = 'lisi'; // 只读属性不能修改info.age=22;// 可以修改 如上...
return token = SyntaxKind.EndOfFileToken; } let ch = text.charCodeAt(pos); // Special handling for shebang if (ch === CharacterCodes.hash && pos === 0 && isShebangTrivia(text, pos)) { pos = scanShebangTrivia(text, pos);
public int FirstNotRepeatingChar(String str) { if(str==null||str.equals("")) return -1; HashMap<Character,Integer> hashmap=new HashMap<Character,Integer>(); char[] charStr=str.toCharArray(); //遍历两遍。第一遍更新hashmap<字符,次数>\ ...
function* uppercase(iter: Iterator<string, any>) { while (true) {const{ value, done } = iter.next(); yield value.toUppercase(); // oops! forgot tocheckfor `done` firstandmisspelled `toUpperCase`if(done) { return; } } } It would be hard to fix this on everyIteratortoday without ...
// You can also use the full attribute to define the format @property ({ visible: false }) text: string = 'hello'; // member method onLoad () { // init logic } } The decorator uses the @ character as the marker, the decorator is mainly used for the editor to identify the compon...
Capitalize: convert first character of string literal type to uppercase ConstructorParameters: a tuple of class constructor's parameter types Exclude: exclude a type from another type Extract: select a subtype that is assignable to another type InstanceType: the instance type you get from a newing...
Capitalize: convert first character of string literal type to uppercase ConstructorParameters: a tuple of class constructor's parameter types Exclude: exclude a type from another type Extract: select a subtype that is assignable to another type InstanceType: the instance type you get from a newing...