Type Casting in Golang 1.20

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java frm

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Published on April 22, 2023 6:23:06 AM ● Video Link: https://www.youtube.com/watch?v=doGAGJSGMWs

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Tutorial

Duration: 2:31

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In this video we are going to generate source code for the GoLang Program, Type Casting using chatGPT.
After generating we will verify and run the generated code.

IMPORTANT NOTE on SOURCE CODE: only source code that are acceptable by the youtube description box will be displayed.



##############SOURCE CODE#########################

package main

import "fmt"

func main() {
// Example 1: Converting an int to a float64
var numInt int = 10
var numFloat float64 = float64(numInt)
fmt.Printf("%d is now %f\n", numInt, numFloat)

// Example 2: Converting a float64 to an int
var numFloat2 float64 = 10.5
var numInt2 int = int(numFloat2)
fmt.Printf("%f is now %d\n", numFloat2, numInt2)

// Example 3: Converting a rune to a string
var myRune rune = 'a'
var myString string = string(myRune)
fmt.Printf("%c is now %s\n", myRune, myString)

// Example 4: Converting a string to a byte slice
var myString2 string = "Hello, world!"
var myBytes []byte = []byte(myString2)
fmt.Printf("%s is now %v\n", myString2, myBytes)
}

##############END OF SOURCE CODE#########################

Below is the explanation for the program:

In this program, we are demonstrating four different type conversions using type casting.

In Example 1, we are converting an integer numInt to a float64 numFloat using type casting. We use the float64() function to convert the integer to a float64. The output of this example will be:

10 is now 10.000000
In Example 2, we are converting a float64 numFloat2 to an integer numInt2 using type casting. We use the int() function to convert the float64 to an integer. The output of this example will be:
10.500000 is now 10
In Example 3, we are converting a rune myRune to a string myString using type casting. We use the string() function to convert the rune to a string. The output of this example will be:
a is now a
In Example 4, we are converting a string myString2 to a byte slice myBytes using type casting. We use the []byte() function to convert the string to a byte slice. The output of this example will be:
Hello, world! is now [72 101 108 108 111 44 32 119 111 114 108 100 33]
As you can see, type casting allows us to convert variables from one type to another. It's important to note that not all types can be converted to each other, and that type casting may result in loss of precision or other unintended consequences, so it's important to use it carefully and with awareness of its limitations.

#go #goprogramming #golang #golangtutorial #golanguage