let tuple1:[string,number] = ['hello',12] console.log(tuple1[0]) 1. 2. 但是,元组类型和元素必须一一对应。 let tuple2:[string,number] = [20,'world'] // 没有一一对应 1. 枚举类型(enum) 在计算机科学中,我们经常使用数值来表示一种状态。但是对于较多的状态使用数值来表示可能导致易读性差。...
*/functionconvertEncoding(input:string,fromEncoding:string,toEncoding:string):string{// 使用 iconv-lite 将字符串转换为 Bufferconstbuffer=iconv.encode(input,fromEncoding);// 将 Buffer 转换为目标编码的字符串constconvertedString=iconv.decode(buffer,toEncoding);returnconvertedString;}// 示例:将 UTF-8 ...
type ReadFileCallbackArgs = | [err: undefined, data: Buffer] | [err: Error, data: undefined]; declare function readFile(path: string, cb: (...args: ReadFileCallbackArgs) => void): void; readFile('hello', (err, data) => { if (!err) { return data.byteLength; // Buffer } el...
一、什么是接口在 TypeScript 中,我们使用接口(Interfaces)来定义对象的类型接口是一系列抽象方法的声明,是一些方法特征的集合,第三方可以通过这组抽象方法调用,让具体的类执行具体的方法...TypeScript 中接口除了可用于对类的一部分行为进行抽象以外,还可用于对「
// containerClient: ContainerClient object// blobName: string, includes file extension if provided// buffer: blob contents as a buffer, for example, from fs.readFile()asyncfunctionuploadBlobFromBuffer(containerClient, blobName, buffer){// Create blob client from container clientconstblockBlobClient...
IClientOptions{} export declare type OnMessageFunc = (topic: string, payload: Buffer) => void declare class Topic { public topic: string; public qos: 0|1|2; } export class MQTT { mqclient: mqtt.MqttClient; brokerHost: string; brokerPort: number; subscribeTopics: Array<Topic>; subscribe...
interface FileInfo { path: string; check: boolean; content: string; } const result: FileInfo[] = []; 此时,你会发现 typescript 编译器已经给出了报错,在 content: fs.readFileSync(file) 这一行中,报错信息如下: 不能将类型“Buffer”分配给类型“string”。 如此,在编写代码的时候,就能立即发现错误...
/** 技能 */exportabstractclassSkillInfo{Name:string;Order:number;//第N魂技SkillType: enmSkillType;Range: enmRange;Direct: enmDirect;Description:string;Source:string;getMpUsage():number{returnMath.pow(2,this.Order); }/**武魂融合技的融合者列表 */Combine:string[];abstractExcute(c: character,fs...
string name = 2; int32 age = 3; } ``` 接下来,我们可以使用`protobufjs`库提供的`compile`工具编译`.proto`文件,生成 JavaScript 代码: ```bash protobufjs --js_out=import_style=commonjs,binary:./ --ts_out=./ --grpc_out=./ --plugin=protoc-gen-typescript=./ --grpc_plugin=protoc-...
Types marked as optimal provide the best performance because no conversion step (i.e. number to low and high bits or base64 string to buffer) is required.ToolsetWith that in mind and again for performance reasons, each message class provides a distinct set of methods with each method doing ...