Emmanuel John

  I'm a full-stack software developer, mentor, and writer. I am an open source enthusiast. In my spare time, I enjoy watching sci-fi movies and cheering for Arsenal FC.


25 Stories by Emmanuel John

Linting Go programs: A guide to improving code quality

Let's explore linting in Golang, including a good linting package to use and alternative packages for linting in Go.
0 4 min read

A deep dive into regular expressions with Golang

Golang comes with an inbuilt regexp package that allows you to write regular expressions of any complexity. Here's an in-depth look at it.
0 6 min read

Handling user authentication with Remix

Learn how to implement authentication on Remix apps and build a full-stack quote wall application with support for user authentication.
0 19 min read

Build an image generator with Flutter and Go

Build a Flutter image generator app that reads data from a Golang backend and can run on Android, iOS, web, and desktop.
0 3 min read

Converting a text file to PDF in Go

Convert text files to PDF format using the gofpdf package, a document generator with support for text, drawing, and images.
0 3 min read

Cloning Solidity smart contracts using the factory pattern

Learn about the different types of factory patterns in Solidity and the benefits of using them, such as to save on gas fees associated...
4 5 min read

Building a simple app with Go and PostgreSQL

Use Go and PostgreSQL to build a full-stack to-do web application that allows you to perform CRUD operations.
2 11 min read

Go dependency injection with Wire

Use Wire to generate source code at compile time as well as implement dependency injection.
1 3 min read

Building a web scraper in Go with Colly

Learn to use the Go package Colly to build a basic web scraper that gets product information and saves the data to a JSON...
1 6 min read

CRUD with Golang and CockroachDB

Learn how to use Golang to perform Create, Read, Update, and Delete (CRUD) operations against an equally popular database, CockroachDB.
0 10 min read

Exploring reactive programming with Node.js

Functional reactive programming reduces callback hell. Learn the fundamentals of reactive programming and see available libraries for Node.js.
0 4 min read

Using RxJS Observables to transform data in TypeScript

Explore RxJS Observables, how they are used to handle event-driven data, and errors and asynchronous data in a TypeScript application.
2 5 min read