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Go Type casting - conversion

Type cast or conversion is a way of changing an object from one data type to another. It is used in computer programming to ensure a function handles the variables correctly. Go does support type casting by using below syntax form:

type_name(expression)


Example of Go Type casting - conversion

package main

import "fmt"

func main() {
   var value1 int = 22
   var value2 int = 5
   var value3 float32
   
   value3 = float32(value1)/float32(value2)
   fmt.Printf("Value of value3 : %f\n",value3)
}

Output

Value of value3 : 4.400000



Example of Go Type casting - conversion using strconv.FormatInt

Below is an example of typecasting from integer to String using strconv.FormatInt()

package main

import (
  "fmt"
  "strconv"
)

func main() {

    var value1 int = 22
    
    value2 := strconv.FormatInt(int64(value1), 10)
  	
    isString := value2 == "22"
    
    fmt.Printf("is type cast from int to string working: ", isString)
   
}

Output

is type cast from int to string working: %!(EXTRA bool=true)


Example of Go Type casting - conversion using strconv.Itoa

Below is an example of typecasting from integer to String using strconv.Itoa()

package main

import (
  "fmt"
  "strconv"
)

func main() {

    var value1 int = 22
    
    value2 := strconv.Itoa(value1)
  	
    isString := value2 == "22"
    
    fmt.Printf("is type cast from int to string working: ", isString)
   
}

Output

is type cast from int to string working: %!(EXTRA bool=true)


Conclusion

In this page (written and validated by ) you learned about Go Type casting - conversion . What's Next? If you are interested in completing Go tutorial, your next topic will be learning about: Go Concatenate two strings.



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