I’m running a VPN service via systemd on my machine. The service provides a systemd script for me. I can query the service with the standard commands, for example: sudo systemctl status strongswan.service This works fine, except when the computer went to sleep (suspend or hibernate). My machine also stops the wi-fi connection on sleep. When I wake up the machine, the wi-fi connection automatically starts again. My VPN service does not resume.

image from the Gotify website You have several devices and you want to receive notifications from your Android phone to your web browser (or vice versa). Maybe you also want to send notifications via REST API. You are a developer after all. You can think of interesting ways to send notifications. Pushbullet comes to mind, but you don’t want to sign up with Google or Facebook. You don’t want to use Google services.

Here are some notes from the Epic React workshop Advanced Hooks. Function Dependencies in useEffect We use the useEffect hook to run side effects in React. The hook has a “dependency array” which tells it when to fire. That works fine if the trigger is a variable. Like this: const [count, setCount] = useState(0) React.useEffect(() => { // Update the document title using the browser API document.title = `You clicked ${count}times` }, [count]) // <-- that's the dependency list What happens if we use a function as a trigger?

Today I needed to remove backslashes from a number of files. I have yaml frontmatter that should look like this: tags: - React.js - JavaScript I had some files that had backslashes before the dash: tags: \- React.js \- JavaScript You can use Unix tools like grep or sed to search all files that match a pattern. Then you can replace that pattern. But you have to remember that a backslash is a special character.

You’ve got a Node.js back-end server running Express and want to store sessions. You use TypeScript for your server. Let’s see some example code. Excerpt: // src/resolvers/AuthResolver.ts import { MyContext } from '../graphql-types/MyContext'; // more imports // { ... } @Mutation(() => UserResponse) async login( @Arg("input") { email, password }: AuthInput, @Ctx() ctx: MyContext ): Promise<UserResponse> { const user = await User.findOne({ where: { email } }) if (!

Here are five resources for this weekend: The Big List of 101 Places to Learn to Code for Free: tons of free resources Build and Deploy a Full Stack MERN Project - React + Redux, Node, Express, MongoDB [Part 1/2]: complete app tutorial in 2 parts Some “cool” machine learning books: a list of machine-learning books, might be of interest Next.js 101 - Free Online Course: short mini-course on Next.

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