Go Tutorials

Go Programs

How to check if a Specific Item is present in the Set in Go

How to check if a Specific Item is present in the Set in Go ?

Answer

To check if a specific item is present in a Set in Go, you can use a map with a boolean value indicating presence.


✐ Examples

1 Check if Item is Present

In this example,

  1. We define a map named mySet with keys as the elements of the set and boolean values indicating presence.
  2. We set the value of the map to true for items present in the set.
  3. We use the map to check if a specific item is present by accessing the value associated with the key.
  4. The value associated with the key will be true if the item is present in the set, otherwise it will be false.
  5. Finally, we print the result to standard output.

Go Program

package main

import "fmt"

func main() {
    // Define map representing the Set
    mySet := map[string]bool{"apple": true, "banana": true, "orange": true, "grape": true, "melon": true}

    // Check if item is present
    item := "banana"
    isPresent := mySet[item]

    // Print result
    fmt.Printf("Is %s present in the Set? %t\n", item, isPresent)
}

Output

Is banana present in the Set? true

2 Check if Item is Not Present

In this example,

  1. We define a map named mySet with keys as the elements of the set and boolean values indicating presence.
  2. We set the value of the map to true for items present in the set.
  3. We use the map to check if a specific item is not present by accessing the value associated with the key.
  4. The value associated with the key will be false if the item is not present in the set.
  5. Finally, we print the result to standard output.

Go Program

package main

import "fmt"

func main() {
    // Define map representing the Set
    mySet := map[string]bool{"apple": true, "banana": true, "orange": true, "grape": true, "melon": true}

    // Check if item is not present
    item := "peach"
    isNotPresent := !mySet[item]

    // Print result
    fmt.Printf("Is %s not present in the Set? %t\n", item, isNotPresent)
}

Output

Is peach not present in the Set? true

Summary

In this tutorial, we learned How to check if a Specific Item is present in the 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 ?