How to Print the Values of Slices of Golang

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To print the values of slices, you can use the fmt.Println() function. The fmt.Println() function prints one or more values, followed by a newline, to the standard output.

Here is an example of how to create a slice, take a sub-slice, and print the values of the original slice and its sub-slice.

package main

import (
  "fmt"
)

func main() {
  // Create a slice of integers
  numbers := []int{1, 2, 3, 4, 5}

  subSlice := numbers[1:4]

  // Print the values of the original slice and the sub-slice
  fmt.Println("Original slice:", numbers)
  fmt.Println("Sub-slice:", subSlice)
}

Output

Original slice: [1 2 3 4 5]
Sub-slice: [2 3 4]

To print the values of the slice one by one, you can use a for loop with the range keyword.

package main

import (
  "fmt"
)

func main() {
  // Create a slice of integers
  numbers := []int{1, 2, 3, 4, 5}

  // Take a sub-slice from the original slice
  subSlice := numbers[1:4]

  // Print the values of the original slice one by one
  fmt.Println("Original slice:")
  for index, value := range numbers {
    fmt.Printf("Index %d: %d\n", index, value)
  }

  // Print the values of the sub-slice one by one
  fmt.Println("Sub-slice:")
  for index, value := range subSlice {
    fmt.Printf("Index %d: %d\n", index, value)
  }
}

Output

Original slice:
Index 0: 1
Index 1: 2
Index 2: 3
Index 3: 4
Index 4: 5
Sub-slice:
Index 0: 2
Index 1: 3
Index 2: 4

That’s it.

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