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How to Initialize a Set in Go

How to Initialize a Set in Go ?

Answer

To initialize a set in Go, you can use a map with keys of the desired type and boolean values.


✐ Examples

1 Initialize an Empty Set Using a Map

In this example,

  1. We use a map to represent a set-like data structure in Go.
  2. We declare a variable named set1 and assign it an empty map using the make function. The keys of this map are of type string and the values are of type bool.
  3. The empty map represents an empty set.
  4. We then print the set1 to the console to verify its contents. An empty map in Go is represented as map[].

Go Program

package main

import "fmt"

func main() {
    set1 := make(map[string]bool)
    fmt.Println("Contents of set1:", set1)
}

Output

Contents of set1: map[]

2 Initialize a Set with Elements Using a Map

In this example,

  1. We use a map to represent a set-like data structure in Go.
  2. We declare a variable named set2 and assign it a map with elements using the make function. The keys of this map are of type string and the values are set to true.
  3. We then print the set2 to the console to verify its contents.

Go Program

package main

import "fmt"

func main() {
    set2 := make(map[string]bool)
    set2["apple"] = true
    set2["banana"] = true
    set2["cherry"] = true
    fmt.Println("Contents of set2:", set2)
}

Output

Contents of set2: map[apple:true banana:true cherry:true]

Summary

In this tutorial, we learned How to Initialize a Set in Go language with well detailed examples.


More Go Sets Tutorials

  1. How to create an Empty Set in Go ?
  2. How to Initialize a Set in Go ?
  3. How to Get Length of a Set in Go ?
  4. How to create a Set of size N in Go ?
  5. How to create a Set of Numbers from 1 to N in Go ?
  6. How to create a Set of integers in Go ?
  7. How to create a Set of Strings in Go ?
  8. How to Access Items in a Set in Go ?
  9. How to get a Random Item in a Set in Go ?
  10. How to Iterate Over a Set in Go ?
  11. How to check if a Set is Empty in Go ?
  12. How to check if a Set is Not Empty in Go ?
  13. How to get Subset from a Set in Go ?
  14. How to check if a Specific Item is present in the Set in Go ?
  15. How to check if a Set contains all the items of Another Set in Go ?
  16. How to Sort Items of a Set in Go ?
  17. How to Copy a Set in Go ?
  18. How to add an Item to a Set in Go ?
  19. How to find Union of Two Sets in Go ?
  20. How to find Intersection of Two Sets in Go ?
  21. How to check if Two Sets are Equal in Go ?
  22. How to Convert a Set of Integers to a Set of Strings in Go ?
  23. How to Convert a Set of Strings to a Set of Integers in Go ?
  24. How to Convert a Set of Floats to a Set of Strings in Go ?
  25. How to Convert a Set of Strings to a Set of Floats in Go ?
  26. How to Filter Items of a Set based on a Condition in Go ?
  27. How to Remove Specific Item from a Set in Go ?
  28. How to Remove Items from Set based on a Condition in Go ?
  29. How to create a Set of Sets in Go ?