My AI Coding Setup: Agents, Skills, Terminals, and Worktrees
How I coordinate coding agents with reusable skills, a three-pane terminal, and Git worktrees.
- #ai
- #software-development
- #productivity
- #terminal
- #git
Helmer Davila / Blog 🇺🇸
From my workbench.
Notes on building software, working with AI, and the things I learn along the way.
Has testing become more important with AI?
As AI writes more code, testing becomes the way developers keep control
- #ai
- #testing
- #software-development
AI Is Reducing Context Switching, But Experience Still Matters
AI is making technical work easier, but developer judgment and experience still matter.
- #ai
- #software-development
- #productivity
Using AWS to deploy a Startup project: Part 2 - Backend
How we deployed our backend using AWS
- #aws
- #startup
- #backend
- #architecture
- #fargate
- #ecs
- #terraform
Using AWS to deploy a Startup project: Part 1 - Frontend
How we deployed the frontend of a startup project using AWS
- #aws
- #startup
- #frontend
- #cloudfront
- #s3
- #route53
- #systemdesign
Three Scary Developer Stories for Halloween
Based on real stories
- #halloween
- #stories
Hotwire Turbo: Drive, Frames and Streams for Ruby on Rail projects
Taking your app to the next level, without JavaScript
- #ruby
- #hotwire
- #turbo
- #rails
- #javascript
Why and how I moved my blog away from Gatsby and React to Astro Js and Preact
Astro is primarily a static site generator. It allows you to structure your site however you want and generate HTML pages only once, using components.
- #astro
- #javascript
- #typescript
- #gatsby
Why Nest JS is one of the best Node backend frameworks?
And why I would choose it for my next project
- #nestjs
- #typescript
- #javascript
- #frameworks
- #nodejs
How to use functions as Mocks in Python tests
Useful for avoid calling real APIs or services
- #python
- #testing
- #mocking
- #pytest
Tmux: Setup and first steps. My personal development setup Part 1
And how I increased my productivity
- #tmux
- #terminal
- #bash
- #productivity
Laravel Livewire: Reload same page after some event and time
Using a simple Javascript trick
- #laravel
- #php
- #livewire
- #javascript
- #blade
Rails 7 with Ruby 3, MySQL 8 and Redis in Docker Alpine
Using Docker compose to create a Dockerized environment
- #rails
- #redis
- #ruby
- #alpine
- #docker
- #mysql
Eslint: How to print the current configuration from a project
As a JSON file
- #eslint
- #javascript
- #nodejs
- #typescript
Docker MySQL - How to create two databases within the same container
I only wanted to not pollute my Docker database with a bunch of fake names or lorem ipsum content
- #docker
- #mysql
- #database
- #docker-compose
Why rewriting a whole codebase is the last option to improve it?
Let’s do this from scratch, show how junior you are
- #refactoring
- #legacy
- #rewrite
I moved from Jest to Vitest in less than 3 hours
In a Gatsby Typescript project, with React test utils and coverage included
- #react
- #jest
- #vitest
- #testing
- #typescript
- #gatsby
React Native & Jest: Mock Platform OS and color scheme
Testing the code as iOS, iPad and Android device. Light mode and dark mode
- #reactnative
- #react
- #typescript
- #javascript
- #react
- #jest
- #mock
Tmux: Prefix Ctrl-Space not working on macOS
A solution that tmux people will love
- #tools
- #macos
- #tmux
- #terminal
- #shell
- #bash
TypeORM: search in relationships (ft. NestJS)
Using TypeORM and NestJS
- #nestjs
- #typescript
- #javascript
- #typeorm
Vim, Jetbrains or Vscode Vim Mode: Improve navigation between splits
Using a better shortcuts
- #vim
- #neovim
- #jetbrains
- #vscode
Laravel Facades and Mockery, testing chained methods
Using the power of Mockery
- #laravel
- #php
- #testing
- #mockery
- #phpunit
Gatsby: Code syntax highlighting with react-prism-renderer
For different coding languages
- #gatsby
- #javascript
- #typescript
- #react
How to run a macOS VM and Docker together on macOS native using Parallels
macOS VM and Docker running on Parallels
- #macos
- #apple
- #parallels
- #vm
- #docker
Book list - Tech team management
The list that I wanted to know five years ago
- #books
- #management
- #leadership
How to solve Laravel Dusk 500 session error
An issue between Laravel Dusk and your browser version
- #laravel
- #php
- #dusk
- #testing
- #phpunit
I'm developer and I can't get a new job. The lasting #OpenToWork state
And this is a bad thing.
- #coaching
- #softskills
- #developers
Mocking global variables in Python tests
I was trying to test some global variables with Python, specially for a script which contain global variables. And after trying and failing I think that I can show you the most simple version to do it.
- #python
- #mocking
- #pytest
CPanel SSL: Issue free certificates in a non-root server
Just using the acme script, because some shared hosting providers are tied to an option to buy a SSL certificate.
- #cpanel
- #ssl
- #sharedhosting
Write in French, Spanish and English using a single keyboard
English layout. Mac, Windows and Linux
- #productivity
- #cheatsheet
- #macos
- #linux
- #windows
The price of thinking
How do you spend time doing the same rather than paying a subscription
- #startups
- #tools
Rails 6: Running on Docker with PHPMyAdmin
Rails 6 + MySQL + PHPMyAdmin
- #rails
- #ruby
- #phpmyadmin
- #docker
- #mysql
Why I moved my blog from WordPress to Gatsby? (8 reasons as a developer)
8 reasons as developer
- #wordpress
- #typescript
- #gatsby
- #javascript
- #php
- #mdx
React Native - Create custom iPad screen
Using React Native and React Navigation
- #reactnative
- #react
- #typescript
- #javascript
Laravel - Update only blank/empty fields in models
I was looking if there was a function to make a paginator for myself using Sequelize with Typescript. I found a lot of tutorials that teach you how to calculate the offset and the number of pages.
- #laravel
- #php
- #eloquent
Sequelize Pagination with Typescript
I was looking if there was a function to make a paginator for myself using Sequelize with Typescript. I found a lot of tutorials that teach you how to calculate the offset and the number of pages.
- #sequelize
- #typescript
- #javascript
- #orm
Installing Bat in Ubuntu Windows WSL
Downloading the installer as a deb package
- #shell
- #terminal
- #bash
- #wsl
- #tools
AdonisJS: Using Laravel Mix's mix Function
A function commonly used in Laravel projects
- #adonisjs
- #javascript
- #laravel
My AI Coding Setup: Agents, Skills, Terminals, and Worktrees
How I coordinate coding agents with reusable skills, a three-pane terminal, and Git worktrees.
- #ai
- #software-development
- #productivity
- #terminal
- #git
Has testing become more important with AI?
As AI writes more code, testing becomes the way developers keep control
- #ai
- #testing
- #software-development
AI Is Reducing Context Switching, But Experience Still Matters
AI is making technical work easier, but developer judgment and experience still matter.
- #ai
- #software-development
- #productivity
Using AWS to deploy a Startup project: Part 2 - Backend
How we deployed our backend using AWS
- #aws
- #startup
- #backend
- #architecture
- #fargate
- #ecs
- #terraform
Using AWS to deploy a Startup project: Part 1 - Frontend
How we deployed the frontend of a startup project using AWS
- #aws
- #startup
- #frontend
- #cloudfront
- #s3
- #route53
- #systemdesign
Three Scary Developer Stories for Halloween
Based on real stories
- #halloween
- #stories
Hotwire Turbo: Drive, Frames and Streams for Ruby on Rail projects
Taking your app to the next level, without JavaScript
- #ruby
- #hotwire
- #turbo
- #rails
- #javascript
Why and how I moved my blog away from Gatsby and React to Astro Js and Preact
Astro is primarily a static site generator. It allows you to structure your site however you want and generate HTML pages only once, using components.
- #astro
- #javascript
- #typescript
- #gatsby
Why Nest JS is one of the best Node backend frameworks?
And why I would choose it for my next project
- #nestjs
- #typescript
- #javascript
- #frameworks
- #nodejs
How to use functions as Mocks in Python tests
Useful for avoid calling real APIs or services
- #python
- #testing
- #mocking
- #pytest
Tmux: Setup and first steps. My personal development setup Part 1
And how I increased my productivity
- #tmux
- #terminal
- #bash
- #productivity
Laravel Livewire: Reload same page after some event and time
Using a simple Javascript trick
- #laravel
- #php
- #livewire
- #javascript
- #blade
Rails 7 with Ruby 3, MySQL 8 and Redis in Docker Alpine
Using Docker compose to create a Dockerized environment
- #rails
- #redis
- #ruby
- #alpine
- #docker
- #mysql
Eslint: How to print the current configuration from a project
As a JSON file
- #eslint
- #javascript
- #nodejs
- #typescript
Docker MySQL - How to create two databases within the same container
I only wanted to not pollute my Docker database with a bunch of fake names or lorem ipsum content
- #docker
- #mysql
- #database
- #docker-compose
Why rewriting a whole codebase is the last option to improve it?
Let’s do this from scratch, show how junior you are
- #refactoring
- #legacy
- #rewrite
I moved from Jest to Vitest in less than 3 hours
In a Gatsby Typescript project, with React test utils and coverage included
- #react
- #jest
- #vitest
- #testing
- #typescript
- #gatsby
React Native & Jest: Mock Platform OS and color scheme
Testing the code as iOS, iPad and Android device. Light mode and dark mode
- #reactnative
- #react
- #typescript
- #javascript
- #react
- #jest
- #mock
Tmux: Prefix Ctrl-Space not working on macOS
A solution that tmux people will love
- #tools
- #macos
- #tmux
- #terminal
- #shell
- #bash
TypeORM: search in relationships (ft. NestJS)
Using TypeORM and NestJS
- #nestjs
- #typescript
- #javascript
- #typeorm
Vim, Jetbrains or Vscode Vim Mode: Improve navigation between splits
Using a better shortcuts
- #vim
- #neovim
- #jetbrains
- #vscode
Laravel Facades and Mockery, testing chained methods
Using the power of Mockery
- #laravel
- #php
- #testing
- #mockery
- #phpunit
Gatsby: Code syntax highlighting with react-prism-renderer
For different coding languages
- #gatsby
- #javascript
- #typescript
- #react
How to run a macOS VM and Docker together on macOS native using Parallels
macOS VM and Docker running on Parallels
- #macos
- #apple
- #parallels
- #vm
- #docker
Book list - Tech team management
The list that I wanted to know five years ago
- #books
- #management
- #leadership
How to solve Laravel Dusk 500 session error
An issue between Laravel Dusk and your browser version
- #laravel
- #php
- #dusk
- #testing
- #phpunit
I'm developer and I can't get a new job. The lasting #OpenToWork state
And this is a bad thing.
- #coaching
- #softskills
- #developers
Mocking global variables in Python tests
I was trying to test some global variables with Python, specially for a script which contain global variables. And after trying and failing I think that I can show you the most simple version to do it.
- #python
- #mocking
- #pytest
CPanel SSL: Issue free certificates in a non-root server
Just using the acme script, because some shared hosting providers are tied to an option to buy a SSL certificate.
- #cpanel
- #ssl
- #sharedhosting
Write in French, Spanish and English using a single keyboard
English layout. Mac, Windows and Linux
- #productivity
- #cheatsheet
- #macos
- #linux
- #windows
The price of thinking
How do you spend time doing the same rather than paying a subscription
- #startups
- #tools
Rails 6: Running on Docker with PHPMyAdmin
Rails 6 + MySQL + PHPMyAdmin
- #rails
- #ruby
- #phpmyadmin
- #docker
- #mysql
Why I moved my blog from WordPress to Gatsby? (8 reasons as a developer)
8 reasons as developer
- #wordpress
- #typescript
- #gatsby
- #javascript
- #php
- #mdx
React Native - Create custom iPad screen
Using React Native and React Navigation
- #reactnative
- #react
- #typescript
- #javascript
Laravel - Update only blank/empty fields in models
I was looking if there was a function to make a paginator for myself using Sequelize with Typescript. I found a lot of tutorials that teach you how to calculate the offset and the number of pages.
- #laravel
- #php
- #eloquent
Sequelize Pagination with Typescript
I was looking if there was a function to make a paginator for myself using Sequelize with Typescript. I found a lot of tutorials that teach you how to calculate the offset and the number of pages.
- #sequelize
- #typescript
- #javascript
- #orm
Installing Bat in Ubuntu Windows WSL
Downloading the installer as a deb package
- #shell
- #terminal
- #bash
- #wsl
- #tools
AdonisJS: Using Laravel Mix's mix Function
A function commonly used in Laravel projects
- #adonisjs
- #javascript
- #laravel