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Jon Calhoun

Learn Web Development with Go

Practice Go with Gophercises

All Articles

💥 What Does the Tilde Mean in Go Generics

💥 Crash Course on Go Generics

💥 Crash Course on Go Interfaces

💥 Concurrency Patterns in Go: sync.WaitGroup

💥 Database Migrations in Go

💥 Testing API Libraries

💥 How to Parse JSON That Varies Between an Array or a Single Item With Go

💥 Creating a Live Reloader in Less than 200 Lines of Go Code

💥 Working From Home: Separating Your Personal and Work Life

💥 More Effective DDD with Interface Test Suites

💥 Moving Towards Domain Driven Design in Go

💥 Using MVC to Structure Go Web Applications

💥 Flat Application Structure in Go

💥 Why Cant We Settle on a Single Application Structure in Go

💥 TDD is Not for Me

💥 Testing is Not for Beginners

💥 When nil Isn't Equal to nil

💥 Interfaces Define Requirements

💥 Building Gophercises

💥 JSON APIs Are Just Web Applications

💥 Why Cant I Pass This Function as an Http Handler?!

💥 Gotham Go 2018

💥 Jon on the Go Time Podcast!

💥 Go Experience Report: Interfaces with Methods that Return Themselves

💥 Using the Service Object Pattern in Go

💥 Concatenating and Building Strings in Go 1.10+

💥 Exploring vgo

💥 When Should I Use One Liner if...else Statements in Go?

💥 The New Website is Live

💥 Disabling Specific Snippets (autocompletions) in Atom

💥 Using named return variables to capture panics in Go

💥 "I haven't needed X in 3 years" is a bad argument

💥 Building Caddy Server From Source

💥 Securing Cookies in Go

💥 Using functional options instead of method chaining in Go

💥 Subtle issues with ORMs and how to avoid them

💥 Generating data structures that need additional functions

💥 What is SQL injection and how do I avoid it in Go?

💥 Using code generation to survive without generics in Go

💥 Stacks - What they are, and how to implement them in Go

💥 Queues - What are they and how do I implement one in Go?

💥 Let's Learn Algorithms - Updated Format, MOAR VIDEOS!

💥 Representing a Binary Tree in Go Code

💥 Depth First Search (DFS) on a Binary Tree

💥 Trees are also Graphs

💥 What is a Graph?

💥 Beginners - stop limiting your projects to things that are "useful"

💥 Querying for multiple records with Go's sql package

💥 Show me your username and password requirements at login

💥 Querying for a single record using Go's database/sql package

💥 Updating and deleting PostgreSQL records using Go's sql package

💥 How to shuffle arrays and slices in Go

💥 How to determine if a JSON key has been set to null or not provided

💥 Pitfalls of context values and how to avoid or mitigate them in Go

💥 Why are slices sometimes altered when passed by value in Go?

💥 How to use slice capacity and length in Go

💥 Wrapping packages to isolate code responsibility

💥 Inserting records into a PostgreSQL database with Go's database/sql package

💥 Where have all the blog posts gone?

💥 Updating and Deleting records stored in a PostgreSQL table using SQL

💥 Creating Random Strings in Go

💥 Let's Learn Algorithms: Sorting a Custom User Type with Bubble Sort

💥 Let's Learn Algorithms: Binary Searching for Case Insensitive Strings

💥 Let's Learn Algorithms: Implementing Binary Search

💥 How do interfaces work in Go, and why do I keep seeing the empty interface (interface{})?

💥 Let's Learn Algorithms: An Introduction to Binary Search

💥 Let's Learn Algorithms: Sorting a list of strings in alphabetical order with bubble sort

💥 Let's Learn Algorithms: Reverse sorting a list of numbers with bubble sort

💥 Connecting to a PostgreSQL database with Go's database/sql package

💥 Why we import SQL drivers as the blank identifier ( _ ) in Go

💥 Querying for records stored in a PostgreSQL table using SQL

💥 Let's Learn Algorithms: Implementing Bubble Sort

💥 Let's Learn Algorithms: An Introduction to Bubble Sort

💥 Inserting records into a PostgreSQL database using SQL

💥 Creating PostgreSQL databases and tables with raw SQL

💥 How to install PostgreSQL 9.6 on Mac OS X (10.7 or later)

💥 How to install PostgreSQL 9.5 on Ubuntu 16.04

💥 Gotchas and Common Mistakes with Closures in Go

💥 5 Useful Ways to Use Closures in Go

💥 What is a Closure?

💥 How to test with Go

💥 Creating the V in MVC

💥 Using Functions Inside Go Templates

💥 6 Tips for Using Strings in Go

💥 Template Actions and Nested Templates in Go

💥 Cost of living adjusted salaries are terrible for remote employees

💥 An Intro to Templates in Go - Contextual Encoding

💥 Path Prefix Middleware in Go

💥 Why is this string a byte array and other info about strings in Go

💥 Add goimports to Sublime Text 3

💥 Controllers and Views in Go

💥 Rate Limiting API Calls in Go

💥 Revert Ctrl+E Shortcut in Sublime Text + Emmet

Articles and Tutorials by

Jon Calhoun

Follow @joncalhoun

Jon Calhoun is a full stack web developer who teaches about Go, web development, algorithms, and anything programming. If you haven't already, you should totally check out his Go courses.

Previously, Jon worked at several statups including co-founding EasyPost, a shipping API used by several fortune 500 companies. Prior to that Jon worked at Google, competed at world finals in programming competitions, and has been programming since he was a child.

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