Chapter Takeaways

• Errors are values in Go—they're returned, not thrown as exceptions
• Always check errors explicitly; don't ignore them
• Use fmt.Errorf with %w verb for error wrapping (Go 1.13+)
• Use errors.Is and errors.As for error inspection
• Create custom error types when you need structured error information
• Prefer early returns to reduce nesting in error handling code
• Good error messages are clear, contextual, and actionable

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