Iterate over Slice using For Loop in Go

Iterate over Elements of Slice using For Loop

To iterate over elements of a slice using for loop, use for loop with initialization of (index = 0), condition of (index < slice length) and update of (index++). Inside for loop access the element using slice[index].

The syntax to iterate over slice x using for loop is

for i := 0; i < len(x); i++ {
	//x[i]
}

Examples

Iterate over Elements of Slice

In the following program, we take a slice x of size 5. We iterate over the elements of this slice using for loop.

example.go

package main

import (
	"fmt"
)

func main() {
	var x = []int{10, 20, 30, 40, 50}

	for i := 0; i < len(x); i++ {
		fmt.Println(x[i])
	}
}

Output

10
20
30
40
50

Iterate over Elements of String Slice

Now, let us take a slice of strings, and iterate over these string elements.

example.go

package main

import (
	"fmt"
)

func main() {
	var x = []string{"apple", "banana", "cherry"}

	for i := 0; i < len(x); i++ {
		fmt.Println(x[i])
	}
}

Output

apple
banana
cherry

Conclusion

In this Golang Tutorial, we learned how to iterate over elements of a slice using for loop in Go programming, with the help of example programs.