willie-hung

export function add(...args: number[]): number {
  return args.reduce((a, b) => a + b, 0);
}

// in-source test suites
if (import.meta.vitest) {
  const { it, expect } = import.meta.vitest;
  it("add", () => {
    expect(add()).toBe(0);
    expect(add(1)).toBe(1);

willie-hung

import sum from "./sum";
import { describe, expect, it } from "vitest";

describe("#SUM", () => {
  it("should return 0 for empty array", () => {
    expect(sum()).toBe(0);
  });

  it("should return 1 for [1]", () => {
    expect(sum(1)).toBe(1);

willie-hung

// Purpose: Function to sum a list of numbers.
export default function sum(...args: number[]): number {
  return args.reduce((a, b) => a + b, 0);
}

willie-hung

fn main() {
    let i = add_one(69);

    println!("Hello, world! {}", i);
}

fn add_one(x: i32) -> i32 {
    x + 1;
}

willie-hung

fn main() {
    let i = add_one(69);

    println!("Hello, world! {}", i);
}

fn add_one(x: i32) -> i32 {
    x + 1
}

willie-hung

fn main() {
    let i = {
        // This is a statement
        let j = 69;
        // This is an expression
        j + 1
    };

    println!("Hello, world! {}", i);
}

willie-hung

// This code doesn't compile!
fn main() {
    let x = (let y = 0);
}

willie-hung

fn main() {
    let x: i32 = 69;
}

willie-hung

app.get("/photos", async (req: Request, res: Response) => {
  const albumId = req.query.albumId;

  // Check the cache
  const value = await client.get(`photos?albumId=${albumId}`);
  if (value) {
    console.log("Cache hit!");
    res.json(JSON.parse(value));
  } else {
    console.log("Cache miss!");

willie-hung

import express, { Request, Response } from "express";
import axios from "axios";

const app = express();

// Create Redis Client
import { createClient } from "redis";

const client = createClient();
client.on("error", (err) => console.log("Redis Client Error", err));