Type Switch

Lesson in the Go Roadmap · Stage 17: Interfaces

Last updated 14 September 2026

What is Type Switch?

Special form of switch statement that operates on types rather than values. Syntax: switch v := i.(type). Used with interfaces to determine underlying concrete type. Each case specifies types to match. Essential for handling interface{} and polymorphic code.

Study this in the interactive course See the whole Go roadmap

Free resources to learn Type Switch

Official docsType Switch
ArticleA Comprehensive Guide to Type Switches in Go
ArticleChapter 4: Interface and Type Systems in Go

Type Switch: common questions

Can I learn Type Switch in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Type Switch in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Type Switch tutorial for beginners?

It is lesson 74 of 172 in the free Go roadmap, in stage 17, Interfaces. If you are new to Go, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.