golangHow to get unique values from slice

package main

import "fmt"

func main() {
  arr := []int{3,7,4,7,3,7,2,6,7,3,7,4}
  fmt.Println(arr)
  
  keys := make(map[int]bool)
  uniq := []int{}	
  for _, entry := range arr {
    if _, value := keys[entry]; !value {
      keys[entry] = true
      uniq = append(uniq, entry)
    }
  }
  
  fmt.Println(uniq)
}ctrl + cgithub

`import` loads net package which provides a portable interface for network I/O and the fmt to print out the nserver	`package main` default package declaration
`func main() {` declare `main` function that will be launched automatically	`arr` sample int slice with duplicate values
`for _, entry := range arr` iterate over `arr` items	`if _, value := keys[entry]; !value {` check if we have seen this value already
`append(uniq, entry)` append new entries to `uniq` slice

Usage example

package main

import "fmt"

func main() {
  arr := []int{3,7,4,7,3,7,2,6,7,3,7,4}
  fmt.Println(arr)

  keys := make(map[int]bool)
  uniq := []int{}   
  for _, entry := range arr {
    if _, value := keys[entry]; !value {
      keys[entry] = true
      uniq = append(uniq, entry)
    }
  }

  fmt.Println(uniq)
}

output

[3 7 4 7 3 7 2 6 7 3 7 4]
[3 7 4 2 6]

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golangHow to get unique values from slice

Usage example

output

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