Answer1215

摘要： fn multiply(num: Option<usize>) -> usize { return num.unwrap_or(0) * 5; } fn multiply1(num: Option<usize>) -> Option<usize> { match num { Some(num) => 阅读全文

摘要： enum Color { Red, Green, Blue, Yellow, } impl Color { fn is_green(&self) -> bool { if let Color::Green = self { return true; } return false; } fn is_g 阅读全文

摘要： Typescript import * as fs from "fs"; fs.readFileSync("project/lines", { encoding: "utf-8" }) .toString() .split("\n") .filter((_, i) => i % 2 0) .filt 阅读全文

摘要： String collect: automaticlly calling concat on string let foo: String = vec!["this", "is", "a", "test"] .into_iter() .collect(); println!("{:?}", foo) 阅读全文

摘要： docker exec container-id sh -c "patch -p1 < your-file.diff" Replace container-id with the ID of the container you want to run the command in, and your 阅读全文

摘要： Few intertesting things from Rust Option<T>: with Some, unwrap() function todo(): to skil compiler error for a while unreachable(): similar to Typescr 阅读全文

摘要： 1. TSD: https://github.com/SamVerschueren/tsd import {expectType} from 'tsd'; import concat from '.'; expectType<string>(concat('foo', 'bar')); expect 阅读全文

摘要： Blog: https://www.totaltypescript.com/react-component-props-type-helper Get any Prop type from html element: import { ComponentProps } from "react"; t 阅读全文

摘要： import {Expect, Equal} from "../types/utils" import { expect, it } from 'vitest'; type PayloadsToDiscriminatedUnion<T extends Record<string, any>> = { 阅读全文

摘要： interface EnemyAttacker { fireWeapon(): void; driveForward(): void; assignDriver(driverName: string): void; } // Target class EnemyTank implements Ene 阅读全文