How multiple slices can reference the same array in Golang 1.20

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Published on April 21, 2023 2:03:29 PM ● Video Link: https://www.youtube.com/watch?v=qnJ5YL4GnJw

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Tutorial

Duration: 2:09

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In this video we are going to generate source code for the GoLang Program, How multiple slices can reference the same array 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() {
// Declare an array of integers
array := [5]int{1, 2, 3, 4, 5}

// Declare two slices that reference the same array
slice1 := array[1:3]
slice2 := array[2:5]

// Print the contents of the slices
fmt.Println("slice1:", slice1)
fmt.Println("slice2:", slice2)

// Modify an element of slice1
slice1[1] = 0

// Print the contents of the slices again
fmt.Println("slice1:", slice1)
fmt.Println("slice2:", slice2)
fmt.Println("array:", array)
}
##############END OF SOURCE CODE#########################

Below is the explanation for the program:

In this program, we first declare an array of integers using the syntax array := [5]int{1, 2, 3, 4, 5}.
We then declare two slices slice1 and slice2 that reference the same underlying array.
slice1 starts at index 1 and has a length of 2, while slice2 starts at index 2 and has a length of 3.

We then print the initial contents of the slices using the fmt.Println() function.

Next, we modify an element of slice1 by assigning the value 0 to the second element (slice1[1] = 0).
Since both slice1 and slice2 reference the same underlying array, this modification affects both slices.

We then print the contents of the slices and the original array again to see the modification.

Note that when modifying a slice element, we use the slice notation (slice1[1]) rather than the array notation (array[2]),
even though slice1 references the underlying array starting at index 1.
This is because slices are defined by a starting index and a length, so the slice notation automatically takes the starting index into account.

#go #goprogramming #golang #golangtutorial #golanguage