How to Get Array Length in Go - Step by Step Examples

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How to Get Array Length in Go ?

Answer

To get the length of an array in Go, you can use the len function.

✐ Examples

1 Length of Integer Array

In this example,

We create an integer array named numbers with some values.
We then use the len function to get the length of the array and store the returned value in length variable.
len function returns the length of this array.
Finally, we shall print the value in length to standard output.

Go Program

package main
import "fmt"
func main() {
	numbers := []int{1, 2, 3, 4, 5}
	length := len(numbers)
	fmt.Printf("Length of array is: %d", length)
}

Output

Length of array is: 5

2 Length of String Array

In this example,

We create a string array named names with some values.
We then use the len function to get the length of the array and store the returned value in length variable.
len function returns the length of this array.
Finally, we shall print the value in length to standard output.

Go Program

package main
import "fmt"
func main() {
	names := []string{"Alice", "Bob", "Charlie", "David", "Eve"}
	length := len(names)
	fmt.Printf("Length of array is: %d", length)
}

Output

Length of array is: 5

Summary

In this tutorial, we learned How to Get Array Length in Go language with well detailed examples.

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How to Get Array Length in Go - Step by Step Examples

How to Get Array Length in Go ?

Answer

✐ Examples

1 Length of Integer Array

Go Program

Output

2 Length of String Array

Go Program

Output

Summary

More Go Arrays Tutorials