Go Basics Practice (Interactive)
Intuition
Learning through practice: Practice problems are like training drills — they help you apply knowledge and identify areas that need more study.
Why it matters: Regular practice builds confidence and reveals patterns in how concepts are tested. Each problem reinforces key programming concepts.
The key insight: Making mistakes during practice is valuable — each error points to a concept that needs clarification.
Go — Basics Practice
8 auto-graded practice problems covering core Go concepts. Select an answer, submit, and review the explanation.
Types
Functions
Control Flow
Error Handling
Cross-References
- Go Standard Library Flashcards: Interactive flashcards covering Go’s standard library packages.
- Types and Variables: Type system fundamentals tested in the types section.
- Error Handling: Error wrapping and custom error patterns covered in the error section.
Common Mistakes
Forgetting that defer arguments are evaluated immediately: In defer fmt.Println(x), x is evaluated at the defer statement, not when the deferred call runs. Use a closure defer func() { fmt.Println(x) }() to capture the current value.
Using select without a default case: A select with no ready cases and no default blocks forever. Always include a default if you need non-blocking channel operations.
Ignoring errors from functions that return them: Go functions return errors explicitly. Forgetting to check if err != nil causes silent failures and makes debugging difficult.