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PODCAST

3 Minutes with Kent

👋 Hi there! I"m Kent C. Dodds (https://twitter.com/kentcdodds). This is a (week)daily podcast where I give 3 minute thoughts about web development. You can subscribe on iTunes here: http://kcd.im/3-mins-itunes and on RSS here: http://kcd.im/3-mins-rss

technology software how-to

All Episodes

00:02:58

How do I add tests to existing code

3 Minutes with Kent ·

2021/04/06

So the last question in this email has to do with how do you know why where to start testing because you're adding testing to an existing project and so most of your tests are actually writing tests for code that exists and so it's not like there's no test driven development there or anything like that. And so, how do you know like how far do I go and testing when when can I stop and say that this component is tested? Does it have to do with code coverage or whatever? And my answer to that is I

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00:02:58

Writing "Testable" React Components

3 Minutes with Kent ·

2021/04/02

Hey friends this is another answer to that lengthy email from Poeter I'm not sure how to say that but properly sorry but the question is how do you write code that can be easily tested and they go at length to explain, you know, sometimes you write, you know smaller functions and we can test those easier but ultimately like, it doesn't always work that way components typically grow and splitting them up makes it feel harder to maintain and I totally agree with that. I have a blog post called when to

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00:02:59

How to know when you're done testing something

3 Minutes with Kent ·

2021/03/31

Hey your friends So I am going to for the next couple days answer some questions that I got in an email from somebody. I don't know how to pronounce this name. It looks like pejor or push actor. I'm not sure they're from the Netherlands. And anyway, they actually wrote me quite a nice email about testing JavaScript.com and just had some additional questions because the course mostly goes into the how to get things done and that doesn't get as much into like some of the philosoph well it actually

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00:02:59

Rendering react elements with ifs, ternaries,...

3 Minutes with Kent ·

2021/03/30

Hey there friends. So today I'm going to answer a question from Lean or Leon I'm not sure how to say your name sorry but this is asked in the react hooks channel of the discord the KCD discord under the Epic Reactive category and it's talking about exercise six where we show it's it's an exercise on managing state for asynchrony, so we've got to use effect in there and stuff. And we have this status status and that is the status of the promise. So whether it's idle pending reject,Ed or resolved and

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00:02:51

Write the code first, then make the abstraction

3 Minutes with Kent ·

2021/03/27

CORRECTION: I came up with the concept of "AHA Programming" but I did not come up with the acronym. AHA (pronounced "Aha!" like you just made a discovery) is an acronym I got from (https://twitter.com/cherthedev/status/1112819136147742720) Cher Scarlett (https://twitter.com/cherthedev) which stands for "Avoid Hasty Abstractions." Hey friends, just something that I've been thinking about recently is this acronym that I came up with a few years ago. It's AHA and it's pronounced aha and so that's aha

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00:02:54

The future is on the edge

3 Minutes with Kent ·

2021/03/25

Hey friends the future is the edge We've got the now-fight edge thing CloudFlare workers things we want to be able to deploy our code and have it run as close to the user as possible. Before it's always just been static files that you put on a CDN like Akamai or Cloudflare or fastify or something like that because that's really easy to do. You just you deploy and then the provider will send these static files all around the world to their servers and and then users can get those files really

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00:02:57

Universal remotes: So many use cases it's useless

3 Minutes with Kent ·

2021/03/23

What is up friends so this is another one in the real world programming analogies segment I guess so actually a long time ago. I wrote this down as something I could do for a blog post but you know TV remotes and how like you either have like 30 different remotes to control like your TV and the receiver and the the Chromecast, you know, like all the different and remotes that you need for that it's a disaster or you can get a universal remote. And what's interesting about universal remotes is that

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00:02:32

Create git-ignored playground files in your project

3 Minutes with Kent ·

2021/03/22

So one thing that I do, you know, how you like you do something just you've done it forever and then when you show it to somebody they're like blown away like, oh man, what a good idea, whatever nobody is said that to me on this one but I thought I'd be one of those things that um that I just do it naturally in and you might find it to be useful so in my global git ignore for my machine. I have a pattern for ignoring anything that includes the text dot ignored dot and and so then I can create a

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00:02:01

The Diversity of your team is a feature

3 Minutes with Kent ·

2021/03/19

Hey friends, so I am at ski resort in Utah right now and they have this kind of a funny story that in the bathroom they have the urinals covered up like every other one covered up for social distancing and a few weeks ago when I brought my son up here he needed to use the bathroom and all of the and he's he's kind of small so normal he just uses the pot but all of the those were being used and he really needed to go and so I was going to. Have him use the urinal but they covered up the only small or

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00:02:18

Avoid the sunk costs fallacy

3 Minutes with Kent ·

2021/03/18

Hey friends, so I was just working on something for the last hour or so and I got to a point where I decided, you know what this I probably shouldn't be doing this like it was an optimization basically. I wanted to be able to change content on my site, so I whether it be a blog post or the about page or something like that, but not actually trigger a redeploy and I'm using GitHub actions right now for this site and there are ways that you can determine okay, what was the last successful deploy? And

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00:02:57

Using patch-package to workaround a create-react-app...

3 Minutes with Kent ·

2021/03/18

Hey friends. So today I was working on a little problem that I had with Create React app. So if you don't know Epic React is a combination of a bunch of React workshops that I have given many times in a life setting and it's a recorded version of kind of a live workshop that's kind of the feel. Anyway, all of the workshops there are powered by create react app under the hood and I've got a abstraction on top of that to share a bunch of code between all these different workshops.So I am in the

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00:02:56

esbuild is a FAST bundler ⚡

3 Minutes with Kent ·

2021/03/16

Hey folks, so today I want to tell you about ES. Build so if you haven't heard of ES. Build it's been making a lot of noise recently. I think it's I I didn't check but I think it's been around for at least a year. I think is the first time I heard of it. But basically, it is kind of you you can think of it as a bundler like webpack but written and go and apparently go as much better suited for bundler tasks because it is wicked fast. Like I've tried it myself and you think that it's broken.Because

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00:02:59

Getting a Native ESM module imported into a CommonJS...

3 Minutes with Kent ·

2021/03/13

Hey friends So today. I just want to mention something that I've been working on for the last couple days. So if you didn't know node version 10 is the last version of node that so does not support native ECMAScript modules without a flag. So you can use ECMAScript modules with node version 10, but you need to pass it a flag version 12 and above I'll do not require a flag they just support a native ESM out of the box. And what's exciting about this is it means that package authors can start using

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00:02:58

When is a good time to buy a stock?

3 Minutes with Kent ·

2021/03/10

Hey friends So today I'm going to talk about investing. And so, let's just like close your eyes maybe and imagine with me a graph of the stock price of any stock. Typically, it's going to have some ups and downs and things and let's say that the point at the end is at a certain level. And I want you to imagine or to answer me the question. When would have been like thinking historically, when would have been a good time to buy the stock. And in your mind, you might be looking at some of the dips

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00:02:59

Don't sell your kindness for time

3 Minutes with Kent ·

2021/03/09

Hey friends so I was waiting in line for something and I needed to get this thing done so I can move on to my next thing so I wouldn't be late and whatever and there was just this big group of people in front of me that they were just taking a long time and they should have come earlier to do the thing that they were doing because they were gonna be late for what they were doing to and and so it was a little bit frustrating to me and I was part of me wanted to like say something I got or like can I

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00:02:58

Don't Trick TypeScript

3 Minutes with Kent ·

2021/03/08

Hey friends So today I was writing a blog post as I often do and I wanted to ask a question of some TypeScript folks always in the Tit script community and my question sparked a long discussion kind of argument between people about whether a assertion function is tricking the compiler if you're not throwing an error in the function. So let me explain I actually recently wrote a blog post about the different function syntaxes that you have in TypeScript and one of the things that you can do is make

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00:02:54

How to solve programming problems

3 Minutes with Kent ·

2021/03/06

Hey friends so today is office hour stay and I am answered a question on office hours that I thought I'd share with you and it's from Salem and the question was hey can't can you walk us through the process for when you get stuck on a problem and what I do is I try to find where the problem is. I don't try to just do a bunch of random things and hope that one of them works or the solves a bug or whatever because what can happen is, you can implement the wrong solution in the right place and and move

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00:02:50

Make Processes Instead of Goals

3 Minutes with Kent ·

2021/03/04

Hey friends, so I want to talk about making processes not goals. So I noticed recently that I cannot stretch as much as I used to so I could try to put my hands down and try and touch my toes and I'm not even close and and and bothers me and I'd like to be able to be more flexible and my muscles are sore and stuff. So I want to do more stretching. But I I have you know lived life for long enough and and made enough goals to realize that making goals with an end in themselves.Especially like big

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00:02:55

You Can Use React EVERYWHERE: Custom React renderers

3 Minutes with Kent ·

2021/03/04

https://github.com/chentsulin/awesome-react-renderer Hey friends So today I want to tell you about this repo I found called Awesome React Renderer and I'll add a link to it in the notes here, but you know how you have the reactant module and then you have react on and then you have react native. Well, these are called renderers so react is responsible for creating the elements and stuff. And then these different renderers are responsible for taking those elements when things are supposed to be

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00:02:56

Doesn't matter how slow something is if you can cache...

3 Minutes with Kent ·

2021/03/02

So I've been working with Remax for a little while and I'm still trying to learn enough about it that I can articulate my feelings on it really well because I know a lot of people are comparing it to next year yes and and likewise should I pay for something when there's a free option? Trust me, this is gonna be huge and I'm super excited for when they do things to make it so people can try it out a little bit more. But as I was working with it, I,Am or just over the last few months that I've

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235 results

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