In this tutorial, We are going to learn about How to find length of map in go. We can do it by using len() built-in function in go.
len() built-in function returns the length of map, slice, arrays and channel.
Function prototype:
func len(v Type) int
Return type:
len() built-in function returns
the length of map, slice, arrays and channel.
Example with code:
package main
import (
"fmt"
)
func main() {
m := map[string]int {
"Sunday": 0,
"Mondaqy": 1,
"Tuesday": 2,
}
fmt.Println("Size of map: ", len(m))
}
Output:
Size of map: 3
To learn more about golang, You can refer given below link:
https://www.techieindoor.com/go-lang-tutorial/
References:
https://golang.org/doc/
https://golang.org/pkg/
https://golang.org/pkg/fmt/
https://golang.org/pkg/fmt/#Println