How to get a slice of keys from a map in Golang

In this tutorial, you will learn how you can get a slice of keys from a map in Golang

To get a slice of keys from a map we iterate through the map using range statement to extract keys and values from the map

  package main

  import "fmt"

  func main () {
    keys := make([]interface{}, 0)
    demoMap := make(map[string]string)
    demoMap["Mon"] = "Monday"
    demoMap["Tue"] = "Tuesday"
    demoMap["Wed"] = "Wednesday"

    //get a slice of keys from the demoMap
    for k, _:= range demoMap {
      keys = append(keys, k)
    }
    fmt.Printf("keys are %v", keys) //[Mon Tue Wed]
  }

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