Deleting Keys From Maps
We can also remove key-value pairs from maps using the delete()
function.
delete(mapName, keyName)
Here are some points to note regarding the delete()
function:
- The
delete
function does not return any value; - If the key
keyName
doesn't exist, it simply does nothing; - If the map
mapName
doesn't exist, it shows an error during compilation.
Here is an example of the delete()
function being used in a program:
index.go
12345678910111213package main import "fmt" func main() { var numbers = map[string]int { "one": 1, "two": 2, "three": 3, } fmt.Println(numbers) // Output: map[one:1 three:3 two:2] delete(numbers, "three") fmt.Println(numbers) // Output: map[one:1 two:2] }
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Deleting Keys From Maps
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We can also remove key-value pairs from maps using the delete()
function.
delete(mapName, keyName)
Here are some points to note regarding the delete()
function:
- The
delete
function does not return any value; - If the key
keyName
doesn't exist, it simply does nothing; - If the map
mapName
doesn't exist, it shows an error during compilation.
Here is an example of the delete()
function being used in a program:
index.go
12345678910111213package main import "fmt" func main() { var numbers = map[string]int { "one": 1, "two": 2, "three": 3, } fmt.Println(numbers) // Output: map[one:1 three:3 two:2] delete(numbers, "three") fmt.Println(numbers) // Output: map[one:1 two:2] }
Was alles duidelijk?
Bedankt voor je feedback!
Sectie 6. Hoofdstuk 7