golang tutorial - Error Handling In Golang | Error Handling In Go - golang - go programming language - google go - go language - go program - google language

Exception handling is the process of responding to the occurrence, during computation.
It often change the normal flow of program execution.
In general, an exception breaks the normal flow of execution and executes a pre-registered exception handler methods created by the developers.
Other options for exception handling in software is error checking, which maintains normal program flow.

type error interface {
   Error() string
}

click below button to copy the code. By - golang tutorial - team

Functions normally return error as last return value. Use errors.New to construct a basic error message as following:

func MathFunction(value float64)(float64, error) {
   if(value < 0){
      return 0, errors.New("Math: negative number passed to Sqrt")
   }
   return math.Sqrt(value)
}

click below button to copy the code. By - golang tutorial - team

Use return value and error message.

result, err:= Sqrt(-1)

if err != nil {
   fmt.Println(err)
}

click below button to copy the code. By - golang tutorial - team

Example

package main

import "errors"
import "fmt"
import "math"

func MathFunction (value float64)(float64, error) {
   if(value < 0){
      return 0, errors.New("Math: negative number passed to Sqrt")
   }
   return math.Sqrt(value), nil
}

func main() {
   result, err:= MathFunction (-1)

   if err != nil {
      fmt.Println(err)
   }else {
      fmt.Println(result)
   }
   
   result, err = Sqrt(9)

   if err != nil {
      fmt.Println(err)
   }else {
      fmt.Println(result)
   }
}

click below button to copy the code. By - golang tutorial - team

golang , gopro , google go , golang tutorial , google language , go language , go programming language

output for the above go language program

Math: negative number passed to Sqrt
3

Related Searches to Error Handling In Golang | Error Handling In Go

golang error handling best practicesgolang error type switchgolang compare errorsgolang error stack tracegolang try catchgolang errors wrapgolang error type assertiongolang panicgolanggoprogoogle gogolang tutorialgoogle languagego languagego programming languagego languagego programming languagegolang tutorialgo googlegoogle gogolanggp languagego programming language bookgolang coursethe go programming languagebest book to learn golanggolang web development tutorialgolang big datago language bookbig data golanggolang booklearn golanggolang programsgo programming language usesgo to google go to googlelearn go programminggoogle and gowhat is go programming languagego google go google go googlewhich programming language used in googlego to the bookgo scripting languagegolang online tutorialgoogle language programminggo language programminggolang iotgo to go to googlewhy go languagego programming language tutorialgo language tutoriallearn go languagegolang jobsgoogle go softwareprogramming language gogo programing languagegolang web frameworkgo for googlego language ide for windowsgoogle golanggolang programminggoogle coding languagegolang projectsgo programming tutorialgoogle go language tutorialgolang debuggergo to the googlegoogle go programming languagegolang classgolang serverprogramming language used by googlegoogle go languagego programminggo programming pdfgolang developmentgolang frameworkgo language examplesgolang tutorial pdflanguage googlego programgo programming language pdf

golang tutorial - Error Handling In Golang | Error Handling In Go - golang - go programming language - google go - go language - go program - google language

Error Handling In Golang

click below button to copy the code. By - golang tutorial - team

click below button to copy the code. By - golang tutorial - team

Use return value and error message.

click below button to copy the code. By - golang tutorial - team

Example

click below button to copy the code. By - golang tutorial - team

golang , gopro , google go , golang tutorial , google language , go language , go programming language

output for the above go language program

Related Searches to Error Handling In Golang | Error Handling In Go

Wikitechy

Workshop

Join our Community

Other Languages