---
title: "Error handling in Go?"  
description: "Error handling in Go?"  
author: "Steilla Mitchel"  
published: 2023-10-16  
updated: 2023-10-16  
canonical: https://www.mindstick.com/forum/160168/error-handling-in-go  
category: "go"  
tags: ["go", "golang"]  
reading_time: 2 minutes  

---

# Error handling in Go?

[Error handling](https://www.mindstick.com/articles/1825/objective-c-error-handling) in Go?

## Replies

### Reply by Aryan Kumar

In Go, [error](https://yourviews.mindstick.com/view/88527/fixing-quickbooks-error-4120-reinstalling-vs-repairing) [handling](https://www.mindstick.com/forum/34585/file-handling) is straightforward and relies on the use of error values returned from functions. Here's a simple explanation of how error handling works in Go:

**Errors are Values**: In Go, errors are represented as values. The built-in **error** interface is commonly used to define error types. It's a simple interface with one method: **Error() string**.

**Returning Errors**: Functions often return two values, where the second value is an error. If everything went well, the error is **nil**, indicating success. If there's an issue, the error contains information about the problem.

```plaintext
func divide(a, b int) (int, error) {
    if b == 0 {
        return 0, errors.New("division by zero")
    }
    return a / b, nil
}
```

**Checking for Errors**: When you call a function that returns an error, it's common to check the error immediately. This can be done with an **if** statement.

```plaintext
result, err := divide(10, 0)
if err != nil {
    fmt.Println("Error:", err)
} else {
    fmt.Println("Result:", result)
}
```

**Error Types**: You can create custom error types by implementing the **error** interface. This allows you to provide more detailed error information.

```plaintext
type CustomError struct {
    Message string
}

func (e *CustomError) Error() string {
    return e.Message
}
```

**Panic and Recover**: In exceptional cases, you can use **panic** to halt the program's normal execution. You can recover from panics using the **recover** function. However, this is used sparingly, typically for unrecoverable errors.

```plaintext
func example() {
    defer func() {
        if r := recover(); r != nil {
            fmt.Println("Recovered from panic:", r)
        }
    }()

    panic("This is a panic")
}
```

Remember that proper error handling is essential in Go to make your programs more robust. It ensures that unexpected issues are gracefully managed and doesn't lead to program crashes.


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Original Source: https://www.mindstick.com/forum/160168/error-handling-in-go

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