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
}

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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)
}

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Use return value and error message.

result, err:= Sqrt(-1)

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

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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)
   }
}

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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

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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

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Use return value and error message.

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Example

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output for the above go language program

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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

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