Type Constraints

Lesson in the Go Roadmap · Stage 18: Generics

Last updated 14 September 2026

What is Type Constraints?

Specify which types can be used as type arguments for generics. Defined using interfaces with method signatures or type sets. Common constraints include any, comparable, and custom constraints. Enable writing generic code that safely operates on type parameters.

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Free resources to learn Type Constraints

Official docsGenerics
ArticleA walkthrough of type constraints in Go
ArticleMastering Type Assertion in Go

Type Constraints: common questions

Can I learn Type Constraints 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 Constraints 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 Constraints tutorial for beginners?

It is lesson 67 of 172 in the free Go roadmap, in stage 18, Generics. 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.