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# tutorial

Tutorial is a general purpose tag. We welcome all types of tutorial - code related or not! It's all about learning, and using tutorials to teach others!

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Callback Functions in JavaScript

Callback Functions in JavaScript

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2 min read
Coleções Java

Coleções Java

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11 min read
A local requestbin in 200 lines of PHP — why self-hosting beats webhook.site for production debugging

A local requestbin in 200 lines of PHP — why self-hosting beats webhook.site for production debugging

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9 min read
Mocking an OpenAPI Spec From Scratch in 600 Lines of TypeScript

Mocking an OpenAPI Spec From Scratch in 600 Lines of TypeScript

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9 min read
Envelope Encryption for .env Files, the Right Way (PHP CLI, Stdlib Only)

Envelope Encryption for .env Files, the Right Way (PHP CLI, Stdlib Only)

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9 min read
zod-to-schema: A Zero-Config CLI That Runs Your TypeScript In-Process

zod-to-schema: A Zero-Config CLI That Runs Your TypeScript In-Process

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8 min read
The `notify` crate is surprisingly pleasant — I built a cross-platform file watcher in four dependencies

The `notify` crate is surprisingly pleasant — I built a cross-platform file watcher in four dependencies

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8 min read
The Rubber Band That Explains Next.js Rendering (SSR, SSG, ISR, CSR)

The Rubber Band That Explains Next.js Rendering (SSR, SSG, ISR, CSR)

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4 min read
Troubleshooting High CPU and Memory Usage on Linux

Troubleshooting High CPU and Memory Usage on Linux

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7 min read
Por Qué Fallan los Agentes de IA: 3 Modos de Fallo Que Cuestan Tokens y Tiempo

Por Qué Fallan los Agentes de IA: 3 Modos de Fallo Que Cuestan Tokens y Tiempo

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9 min read
Why AI coding agents keep forgetting everything (and how I fixed it with MCP memory)

Why AI coding agents keep forgetting everything (and how I fixed it with MCP memory)

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4 min read
Exploratory Data Analysis (EDA) Workflow

Exploratory Data Analysis (EDA) Workflow

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3 min read
How to Build a $15K Web Design Agency Landing Page With Next.js and Formgrid

How to Build a $15K Web Design Agency Landing Page With Next.js and Formgrid

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18 min read
Installing Python and pip on Ubuntu 26.04

Installing Python and pip on Ubuntu 26.04

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2 min read
How to Detect if a Website Uses Intercom: 5 Methods

How to Detect if a Website Uses Intercom: 5 Methods

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10 min read
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