How to modify and iterate a slice using for range in Golang 1.20

Channel:

java frm

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Published on April 21, 2023 12:35:51 PM ● Video Link: https://www.youtube.com/watch?v=zu2T_fhNqQM

Game:

SLICE (2018)

Category:

Tutorial

Duration: 1:53

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In this video we are going to generate source code for the GoLang Program, How to modify and iterate a slice using for...range 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.
In this program I have replaced the angled brackets with > or <. once you copy the source code to editor replace it with greater than or less than symbols respectively.


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

Sure, here's an example Go program that modifies and iterates over a slice using the range keyword:

package main

import "fmt"

func main() {
// Declare a slice of integers
slice := []int{1, 2, 3}

// Modify the slice
slice[1] = 4

// Iterate over the slice using the range keyword
for index, value := range slice {
// Print the index and value of each element in the slice
fmt.Printf("slice[%d] = %d\n", index, value)
}
}

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

Below is the explanation for the program:

In this program, we first declare a slice of integers using the syntax slice := []int{1, 2, 3}.
We then modify the second element of the slice to be 4 using the index operator ([]) and assignment operator (=).

We then use the range keyword to iterate over the slice.
The range keyword returns both the index and value of each element in the slice on each iteration.
We use the for loop syntax to declare two variables index and value which receive the index and value of each element in the slice respectively.
Inside the loop, we use fmt.Printf() to print the index and value of each element in the slice.

Note that because we used the assignment operator (=) to modify the slice element, the original slice is updated with the new value. We can also use range to modify the elements in the slice directly if we need to.

#go #goprogramming #golang #golangtutorial #golanguage

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