How to delete items from map in Golang 1.20
0In this video we are going to generate source code for the GoLang Program, How to delete items from map 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
m := map[string]int{
"one": 1,
"two": 2,
"three": 3,
}
// Delete a key-value pair from the map using the delete function
delete(m, "two")
fmt.Println("Map after deleting 'two':", m)
// Delete a key-value pair from the map using the map literal syntax
m = map[string]int{
"one": 1,
"three": 3,
}
fmt.Println("Map after deleting 'two' and creating a new map:", m)
// Delete all key-value pairs from the map using a for loop
for key := range m {
delete(m, key)
}
fmt.Println("Map after deleting all key-value pairs:", m)
}
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 m := map[string]int{key1: value1, key2: value2, ...}.
We then delete a key-value pair from the map using the delete function and the syntax delete(m, key), where m is the map and key is the key of the key-value pair to be deleted.
We then print the map using the fmt.Println function to verify that the key-value pair has been deleted.
Next, we delete a key-value pair from the map using the map literal syntax by creating a new map that only contains the key-value pairs that we want to keep.
We then print the map using the fmt.Println function to verify that the key-value pair has been deleted.
Finally, we delete all key-value pairs from the map using a for loop and the range keyword to iterate over all keys in the map.
Inside the loop, we use the delete function to delete the key-value pair for each key.
We then print the map using the fmt.Println function to verify that all key-value pairs have been deleted.
#go #goprogramming #golang #golangtutorial #golanguage