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
len(x)
Return Value
An integer.
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Example
In the following program, we take a map from string to string, and find its length.
example.go
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.