Focus is the kryptonite for foundersSpotify

Lack of focus is a company killer. Ironically, founders often have an easily-excited distractible personality.

Postpone getting a boardSpotify

Early startups need speed, and a board can be a big slowdown. Alignment inside the team already eats enough time. Want input? Coffee. Want names on the website? Call them an advisory board.

Obesity is a thing of the pastSpotify

Novo Nordisk spent a century on insulin, then disrupted themselves with Ozempic. Body composition as a class marker is just getting started.

AI: become a good evaluator

Generating decent content gets cheap. The work that remains is taste, judgment, and deciding what to make.

Say the world is changing, and you're on the right side

Andy Raskin's brand framework paints a divide, prompts action, and is dead simple to retell.

Give feedback on either Speed, Quality OR PrioritySpotify

Don't call the work good or bad. Name whether you need speed, quality, or alignment right now, and own the tradeoff.

Stickiness matter

Seed-stage metrics that calm investors: revenue, churn, margins. Stickiness first, and only if you actually measure.

Manager: I am worried about dev speed

When a manager worries about speed, the real topic is trust. Grunt work is not how software actually moves.

Turborepo: TypeScript gotchas

Nginx - why would I use it?

ESM vs CommonJS

Startup execution: Focus on few things

Focus is critical. There's 100 important things to work on every single day, so you need to say no more often than you'd like.

Make everyone do support

I like to think of a support ticket as a condensed result of a user test. It's a user telling you what they want, what they don't understand, and what they don't like. Treasure it, and spread that knowledge across the company by having everyone do customer support.

Avoid commission in startups

Based-on-reality short-story of a sales team, and the effects of introducing commission based salaries on culture and process.

Scalable frontend velocity

Make it easy to delete: colocate by feature. Make it easy to build it right: automated checks. Make it easy to be newb: reduce knowledge-requirements, embrace dumb questions. Migrate incrementally: large diffs fail. Use a monorepo: reduced error rate. Make code quality derivative positive: make things better over time.

Time zones: It's not just «use UTC, man»

«Hi. This is my first time at Developers Anonymous. My name is Tomas, I'm a coder and I've built a calendar»... Time zones are f***ing hard. The last 6 months I've reported and fixed bugs in Moment, dayjs, date-fns-tz and React Aria.

Review your own PRs

I wrote in a (student) newspaper once. I bet I wrote ~10 typos per page. 9 of which I caught on my own review. Similarly, most bugs I write are apparent to myself when I review the code. It's like it's two different brain modes: producer and reviewer.

Build for today. Only today

I often add a field, model or endpoint that I need 'tomorrow'. When 'tomorrow' finally shows up, it's usually not quite what I need. Note to self: Stop building for tomorrow. Stop build it 100% complete. Stop over-generalizing to fit future scenarios.

Don't abbreviate variable names

Variable name: don't make them short and cryptic – let them be as long as they really are. Sidenote: Subscribe to that channel, it's great.

Don't write comments

There is a consistent way of describing how a program should work, it is called writing code. Writing comments that describe how code work is usually an excuse for writing bad code. Exceptions: documentation/issue links, and sometimes bad code is required.

Test "commit driven development"

Writing smaller commits is a constant practice that I feel often pays off. The Primeagen's reflections on the topic is worth seeing (from 11:16, earlier parts are so so). Challenge: for your next feature, write commit messages first!

DRY does more harm than good

«Please DRY up your code» is usually bad advice – abstraction creates coupling and complex code. I'd advocate ALRY – ALways Repeat Yourself (once). When that code has matured, you are in a better position to see if it's a matching concept that can be combined to common code – or if it's just accidentally similar.

Select velocity + adaptability over performance

Your code speed can be seen as a combination of velocity (how fast you add features), adaptability (how well suited code are for future changes) and performance (how fast the user experiences it). Don't care about performance until it's a problem. Then measure, test and measure.

React.js: The Documentary

React.js: The Documentary is a 2015 documentary film about the React.js JavaScript library. Bring popcorn?

create-t3-applib

The easiest way to get started with the best tools for building a modern web app.

astro.buildlib

Build islands of interactive Svelte, React++ apps inside a static site. Perfect for building personal sites.

Typescript: don't use interfaces

Use types instead of interfaces in Typescript. Except when you have to use interface.

Typescript: do not use enums

Typescript enums are bad. Never use them, use a record as const instead. Note: This still applies after the 5.0 release with enum improvements (they are now bad instead of terrible).

No more CSS-in-JS

A foreshadowing about stitches, emotion and styled components dying off, and tailwind becomes emperor.

react.emaillib

Amazing. Crafting e-mails has been a remarkable pain in my butt several times. This looks like it could be a game changer.

State of JS 2022

Superb stats on the state of JavaScript. TLDR: NextJS still nice, Svelte is great, and watch Solid. Vite or Turbopack replaces Webpack. Playwright replaces Cypress. Turborepo replaces Lerna.

React Query, the complete tutorial

Comprehensive, well-written writeup of React Query. I've learned a lot about my favourite data fetching library.

The Grug Brained Developer

Hilarious text, just to the point on why thinking stupid about code is being very smart. HARD RECOMMEND.

Email providers: AWS SES, Mailgun, Sendgrid, Mailchimp?

Cows are killing bio-diversity

CO2 gets the headlines. Biodiversity dies from land use, and most of that land is for cows.

Use plain text emails

People say they prefer HTML emails, but they engage more with plain text — it feels like a person, not a billboard.

Suggested data structure for logging

Postgres needs built-in connection pooling

Starting with Google BigQuery

Reminder: iPhone wants H.264 encoded videos

Firebase data modeling

Burn Firebase to the ground

Deploying GraphQL API to Google cloud

Aurora serverless starts at 100$ month

No rules rules

How-to: Run npm/yarn with one command

NextJS: Add state to URL query params

How will you measure your life? 🤔

Please lower case db table names

A lunch about marketing

Make Raspberry Pi display an URL on boot

The effective engineer 👍

Adding system metrics dashboard to logz.io

How-to: find bugs with git bisect

1Password vs LastPass for teams

How to load web fonts quickly

Passbolt on AWS

Blitzscaling pt. 2: Management

Blitzscaling pt. 1

The job of my boss: make me feel trusted

Extend the circle of safety to the outer parts of the organisation. When employees feels safe and trusted, they can spend their energy being creative and productive.

Understanding ESLint config

[package] has unmet peer dependency

Take initiative beyond what is expected of you

«Guest leadership» is about taking responsibility to try to solve a problem or task that is not your own (alone), without needing an invitation to do so. Increase trust and ownership by giving your team the freedom to own the outcome and trust to solve things their way.

Migrating to React Redux hooks

Integrate task management with code

Stop using defaultProps

Convert mp4 to gif

Setting up a new developer Macbook

IDE shortcuts

Stop using default exports

Gatsby won't last

This is how you do Pull requests

A good standup has 3 points

Always use Exact types in Flow

Where is my PostgreSQL logs?

Quick http benchmarking with curl

Boto3 - copy, create files + cloudfront invalidations

Adding a python API handler with serverless

Creating a Google Chrome Extension

A Prettier JavaScript Formatter

While ESLint eliminated the need for people to talk about code conventions, Prettier can eliminate the need for people to think about code formatting. 10 000 thumbs up! I will never work for a company without autoformatting again.

React Conf 2017: A Prettier Printer

While ESLint eliminated the need for people to talk about code conventions, Prettier can eliminate the need for people to think about code formatting. 10 000 thumbs up! I will never work for a company without autoformatting again.

CSS systems and principles

Stop using semantic class names

What skills does an it consultant need?

Access Google Analytics API with OAuth token

How to add Web App Manifest

AWS S3 and CloudFront workshop

Getting started with Hubot + Slack

Custom Slack slash commands

Elastic Beanstalk with Terraform

Elastic Beanstalk – In a VPC

GraphQL: Designing a Data Language

GraphQL will replace REST, and the world will be a better place with end-to-end typing safety.

HTTPS for AWS CloudFront and AWS ELB

Using AWS Route 53 and SES to handle DNS and e-mail

Build screen bootup

Create Elastic Beanstalk app with Java 8

AWS Elastic Beanstalk

Send AWS EC2 logs to Slack

Send AWS CloudWatch Alarms to Slack

Add S3 bucket + CloudFront using Terraform (example)

AWS CodePipeline

Adding Freshdesk to Slack

Startup workflow toolkit

Porting a React app to Phonegap

git cheatsheet

Don't convert SVG to PNG in the browser

ES6 notes

Javascripts var, let, and const

D3 + article combo ideas

Set index.html as default file on S3 bucket

React intro notes

How to add hubot to slack

grep middle of file (unix)

Awesome webdeveloper links

AWS rules of thumb notes

Profiling in Chrome Developer Tools

Chromes Awesome Developer Tools

A tour of the Developer tools: emulate network speed. emulate devices. JS debugger. console log timing. profiler.

Sending SMS from python via your phone

Add S3 bucket using awscli (example)

Add S3 bucket using Terraform (example)

curl headers only

Django on Heroku with AWS S3 for files

django rewrite / redirect to new urls

Show environment variables in Heroku

Monitor-driven development

Parallax: solve it with CSS

slides.comlib

This replaces PowerPoint for me: native to the web, simpler, with an open-source variant.

Export data from one Django to another

Do not design your own newsletter emails!

Django + Heroku bootstrap

Center content in HTML mails for OWA

Sending and receiving JSON over Bluetooth

Fresh Macbook and a set of neat tools

Django autocomplete in (virtualenv) shell

jquery confirm modal using bootstrap

Running Django with nginx (on webfaction)

Get python, pip, virtualenv without sudo

pip on python3: Can't decompress data; zlib not available

No module named '_sqlite3'

Building a better Bootstrap

Many mini nuggets on CSS systems. cssstats.com, atozcss.com, sassmeister.com, thesassway.com

fork: retry: Resource temporarily unavailable

Ignore webkit-*, moz-* when typing css

7 ineffective coding habits

Don't write comments, don't write off the line, don't make complex methods with many parameters, don't make complex methods with many parameters, don't do lousy encapsulation, testing should be a reflection of your functions.

Clean Code III: Functions

Functions should do 1 thing. And be short. With few args. Without comments.

bash backup of webserver (FTP and SQL)

Git repo on FTP-server

Mount FTP-server in debian using curlftpfs

Automatic MySQL and FTP backup

Facebook: Invite all friends to event

Web Icon Fonts

Track custom events with google analytics

Cron tabs: create and delete

git: Replace master branch

SFTP in Finder

Alfred for Windows

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