GoFunctionsbeginner12 min read

Multiple Return Values

Harness Go's idiomatic pattern of returning result and error pairs from functions.

On This Page (Table of Contents)

In this lesson, you will learn

✓Understand core principles and mechanics of Multiple Return Values.
✓Write and execute idiomatic Go code for Multiple Return Values.
✓Apply Multiple Return Values patterns in backend systems and real-world architectures.

Overview of Multiple Return Values

Harness Go's idiomatic pattern of returning result and error pairs from functions. In Go, mastering multiple return values provides the foundation for building scalable, high-performance services with clean code and minimal cognitive overhead.

Core Concepts & Syntax

Key terminology, syntax structures, and design guidelines for multiple return values in standard Go programs.

Summary & Practical Advice

Review the essential patterns of Multiple Return Values. Practice writing small standalone programs to internalize the syntax before advancing to the next topic.

Common pitfalls to avoid

Real debugging lessons and exact syntax contrasts to avoid runtime bugs

#1 Improperly configuring or calling Multiple Return Values.

Why it happens: Overlooking type safety, scope boundaries, or standard library conventions.

Incorrect Approach

script.py

python

// Unchecked usage

Correct Solution

script.py

python

// Explicit error checking and idiomatic handling

Key takeaway: Always follow standard Go idioms and verify compiler feedback.

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