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The smart component we want to test: import {Component, OnInit} from '@angular/core'; import {Course} from "../model/course"; import {Observable} from 阅读全文
posted @ 2020-02-19 17:17
Zhentiw
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Primitive Values Undefined (undefined), used for unintentionally missing values. Null (null), used for intentionally missing values. Booleans (true an 阅读全文
posted @ 2020-02-18 17:24
Zhentiw
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Training an algorithm involes four ingredients: Data Model Objective function: We put data input a Model and get output out of it. The value we call i 阅读全文
posted @ 2020-02-18 02:55
Zhentiw
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“人已经存在几百万年了，而你没有存在几百万年，所以你不是人” -- 偷换了“人”的概念 “人已经存在几百万年了” 指的是权人类； “所以你不是人” 🈯️得是生命个体存在的“人体”，虽然两次提及了“人”，却指代的不是同一个概念。 什么是概念？ 概念由两部分组成：内涵和外延 比如： “产品”的内涵： 阅读全文
posted @ 2020-02-18 01:17
Zhentiw
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Code: const disallowedMethods = ['log', 'info', 'warn', 'error', 'dir'] module.exports = { meta: { docs: { description: 'Disallow use of console', cat 阅读全文
posted @ 2020-02-17 19:50
Zhentiw
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For eslint prevent console plugin, we also want to prevent user do so: var csl = console csl.log() Code: const disallowedMethods = ['log', 'info', 'wa 阅读全文
posted @ 2020-02-17 19:05
Zhentiw
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Html: <input type="range" value="0" [style.--thumb-rotate]="720 * $any(input.value)/100 + 'deg'" #input (input)="0"> CSS: input[type="range"]::-webkit 阅读全文
posted @ 2020-02-17 17:30
Zhentiw
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The $any() type cast function Sometimes a binding expression triggers a type error during AOT compilation and it is not possible or difficult to fully 阅读全文
posted @ 2020-02-17 17:28
Zhentiw
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@Injectable({ providedIn: "root" | "any" | "platform" }) export class MyService {} More ProvidedIn: root Every service defined with 'root' will be pro 阅读全文
posted @ 2020-02-17 17:21
Zhentiw
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In Angular version 8, TestBed.get was deprecated. In Angular version 9, we see why: TestBed.inject<T> is introduced as a type-safe replacement. There 阅读全文
posted @ 2020-02-17 16:48
Zhentiw
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