Go – Map Length
To get length of map in Go programming, call len() function and pass map as argument to it. The function returns an integer representing the number of key:value pairs in the map.
In this tutorial, we will learn how to use len() function to get the length of a given map.
Syntax
The syntax to find the length of Map x
is
</>
Copy
len(x)
Return Value
An integer.
Example
In the following program, we take a map from string to string, and find its length.
example.go
</>
Copy
package main
import "fmt"
func main() {
map1 := map[string]string{
"a": "apple",
"b": "banana",
}
var result int = len(map1)
fmt.Print("Length of map : ", result)
}
Output
Length of map : 2
Conclusion
In this Golang Tutorial, we learned how to find the length of a Map, with the help of example programs.