Exception: new Map<string, number>() is OK. Using the types Function and Object is almost never a good idea. In 99% of cases it's possible to specify a more specific type. Examples are (x: number) => number for functions and { x: number, y: number } for objects. If there is...
TypeScript是一种类型化的语言,允许你指定变量的类型,函数参数,返回的值和对象属性。 你可以把本文看做一个带有示例的 TypeScript 高级类型备忘单 让我们开始吧! Intersection Types(交叉类型) 交叉类型是一种将多种类型组合为一种类型的方法。这意味着你可以将给定的类型 A 与类型 B 或更多类型合并,并获得具有所...
export function getCatalogTree() { return request({ url: '/catalog/', method: 'get', }) as unknown as Array<Catalog> } export function saveCatalog(method: string, data: Catalog) { let url = '/catalog/' if (['put', 'patch'].includes(method)) { url += data.id + '/' } // ...
stationInfos = new Map<string, StationInfo>(); // 建立客户端连接 if (this.config.enableMqtt) { this.connectMqtt(); } // 加载缓存数据到内存中 this.LoadStations(); // 定时检查站点是否在线 // this.taskCheckStationOnline(); // 定时存储站点数据缓存 this.taskStoreStationData(); // 定时...
*/ "sourceMap": true, //开启源代码映射,这样在调试的时候就能使用sourceMap调试源代码了 /* Generates corresponding '.map' file. */ // "outFile": "./", /* Concatenate and emit output to single file. */ "outDir": "dist", //用于设置编译结果输出到的文件夹 /* Redirect output structure ...
interfaceCanCheck{checkThing:(x:string|number)=>boolean;}constobj={checkThing:(s:string)=>{returntrue;}}objsatisfiesCanCheck;// Alleged: should be OK This is wrong. Ifobjis aCanCheck, thenobj.checkThing(42)is legal, and42would appear ins, which is only allowed to be astring. ...
functionfoo(arg:unknown){if(typeofarg==="string"){// We know this is a string now.console.log(arg.toUpperCase());}} In this example, we checked whetherargwas astring. TypeScript recognized thetypeof arg === "string"check, which it considered a type guard, and was able to determine...
"devDependencies":{"@types/jest":"^26.0.10","@types/node":"10.17.27","jest":"^26.4.2","ts-jest":"^26.2.0","aws-cdk":"2.16.0","ts-node":"^9.0.0","typescript":"~3.9.7"},"dependencies":{"aws-cdk-lib":"2.16.0","constructs":"^10.0.0","source-map-support":"^0.5.16...
Tip:Tasks offer rich support for many actions. Check theTaskstopic for more information on how to configure them. JavaScript source map support TypeScript debugging supports JavaScript source maps. To generate source maps for your TypeScript files, compile with the--sourcemapoption or set thesourceM...
成功時,包含指定帳戶之帳戶歷史記錄詳細資訊的 map[string]interface{} 陣列。帳戶資料會顯示在地圖的 value 索引鍵下方。發生錯誤時,包含錯誤訊息的非零錯誤物件。 範例: await this.Ctx.ERC721Account.history(accountId) 複製 [ { "trxId": "6ffd0d94f234c12444a5d5aa559563b59dff4d2280b573fea956dc632...