复制 import { removeKeyFromObject } from './test'; import { promptAction } from '@kit.ArkUI'; @Entry @Component struct Index { @State message: string = 'Hello World'; handle() { const person = new Person('Peppa', '18') const obj = new Object(person) console.log(`删除前obj: $...
1. native中使用napi_create_object新建object,并通过 napi_create_string_utf8 和 napi_create_int32建立键值对,通过napi_set_property(env, object, key, value)的方式存放,并回调传给ts层。 2. ts层将回调获取到的object修改(ts层可能修改这个object中的成员变量/键值对),需要再次返回填充到Native层result中。
let value: unknown; value = true; // OK value = 42; // OK value = "Hello World"; // OK value = []; // OK value = {}; // OK value = Math.random; // OK value = null; // OK value = undefined; // OK value = new TypeError(); // OK value = Symbol("type"); ...
for(let [key, value] of entries(test)) { result[key] = value; } 可以发现,报错为a不在Result类型中,成功限制住了。 Object.keys同理。 function objectKeys<T extends object>(obj: T) { return Object.keys(obj) as Array<keyof T> } 3.pr中的应用 可以考虑在utils中进行函数导出。 export func...
Object.keys(obj).forEach(key => { Object.assign((this as any)[key], obj[key]); }); } get(path: string, data: object = {}, config: IAxiosRequestConfig = {}) { return _request({ ...config, method: 'GET', url: path, ...
functiongetValueFromKey(obj:object,key:string){// throw error// key的值为string代表它仅仅只被规定为字符串// TS无法确定obj中是否存在对应的keyreturnobj[key];} 显然,我们直接为参数声明类型这是会报错的。同学们可以结合刚刚学过的 keyof 关键字配合泛型来思考一下如何消除 TS 的错误提示。
[key:string]:any } typeTPick=Pick<IPeople,'name'|'age'|'color'> 等同于 typeTPick= { name:string; age?:number|undefined; color:any; } 类似于 const getValue = <Textendsobject,KextendskeyofT>(obj:T, name:K):T[K] => {
// Object类型 可以是 对象 函数 正则 let a: Object a = {name: 'hky'} a = () => {} a = new RegExp('') let b:{[key:string]: unknown} b = {name: 'lwx'} b = () => {} // 不能将类型“() => void”分配给类型“{ [key: string]: unknown; }”。类型“() => void...
Options for the TypeScript checker (typescriptoption object). NameTypeDefault valueDescription memoryLimitnumber2048Memory limit for the checker process in MB. If the process exits with the allocation failed error, try to increase this number. ...
HuksKeyApi HuksParamSetApi HuksTypeApi 头文件 drawing_bitmap.h drawing_brush.h drawing_canvas.h drawing_color.h drawing_font_collection.h drawing_path.h drawing_pen.h drawing_text_declaration.h drawing_text_typography.h drawing_types.h external_window.h ...