Error Handling in the Go Language

Error handling is a very important topic in programming languages. If errors are not handled properly, the program may exhibit various strange behaviors that eventually lead to program crashes or serious problems. Error handling is also a very important topic in Go, which provides a built-in mechanism for handling errors that allows us to better control the behavior of the program.

# Error Types in the Go Language

Errors are a very important concept in Go, and all errors are represented by a built-in error interface. This interface is defined as follows:

type error interface {
    Error() string
}

This interface has only one method, Error () , which returns a string representing the error message. All types that implement this interface can represent errors.

In Go, we usually use errors.New function to create a new error. This function receives a string representing the error message, and then returns a type that implements the error interface. Here is an example:

package main

import (
    "errors"
    "fmt"
)

func main() {
    err := errors.New("something went wrong")
    fmt.Println(err)
}

The output of this program: something went wrong