How to use maps as reference types in Golang 1.20
0In this video we are going to generate source code for the GoLang Program, How to use maps as reference types 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 a map of string keys and integer values
m1 := map[string]int{
"one": 1,
"two": 2,
"three": 3,
}
// Assign the map to a new variable
m2 := m1
// Modify the map through the new variable
m2["four"] = 4
// Print both maps to show that they are the same
fmt.Println("Map 1:", m1)
fmt.Println("Map 2:", m2)
}
##############END OF SOURCE CODE#########################
Below is the explanation for the program:
In this program, we first declare a map of string keys and integer values using the map literal syntax and the syntax m1 := map[string]int{key1: value1, key2: value2, ...}.
We then assign the map to a new variable using the syntax m2 := m1.
This creates a new reference to the same underlying map data structure.
Next, we modify the map through the new variable by adding a key-value pair using the syntax m2["four"] = 4.
Finally, we print both maps using the fmt.Println function to show that they are the same.
We should see that both maps contain the same key-value pairs, including the key-value pair that was added using the new variable.
This output shows that the program has successfully demonstrated that maps are reference types.
The modification made to the map through the new variable is reflected in the original map, because they are both references to the same underlying map data structure.
#go #goprogramming #golang #golangtutorial #golanguage