How to create a Set of Sets in Go - Step by Step Examples

How to create a Set of Sets in Go ?

Answer

To create a Set of Sets in Go, you can use maps to represent sets. You create individual sets as maps and then add them to another map.

✐ Examples

1 Creating a Set of Sets of Integers

In this example,

First, we create three individual sets of integers named set1, set2, and set3. We add the elements 1, 2, 3 to set1, 4, 5, 6 to set2, and 7, 8, 9 to set3.
Next, we create a map named setOfSets and add set1, set2, and set3 to it. This nests the three sets within a single map.
We then iterate over each set within setOfSets using a for loop. Within the loop, we print each individual set to the standard output.

Go Program

package main

import "fmt"

func main() {
    set1 := map[int]bool{1: true, 2: true, 3: true}
    set2 := map[int]bool{4: true, 5: true, 6: true}
    set3 := map[int]bool{7: true, 8: true, 9: true}

    setOfSets := map[int]map[int]bool{1: set1, 2: set2, 3: set3}

    for _, set := range setOfSets {
        fmt.Println(set)
    }
}

Output

Output:
map[1:true 2:true 3:true]
map[4:true 5:true 6:true]
map[7:true 8:true 9:true]

2 Creating a Set of Sets of Strings

In this example,

First, we create three individual sets of strings named setA, setB, and setC. We add the elements "apple", "banana", "cherry" to setA, "dog", "elephant", "fox" to setB, and "grape", "honeydew", "kiwi" to setC.
Next, we create a map named setOfStringSets and add setA, setB, and setC to it. This nests the three sets within a single map.
We then iterate over each set within setOfStringSets using a for loop. Within the loop, we print each individual set to the standard output.

Go Program

package main

import "fmt"

func main() {
    setA := map[string]bool{"apple": true, "banana": true, "cherry": true}
    setB := map[string]bool{"dog": true, "elephant": true, "fox": true}
    setC := map[string]bool{"grape": true, "honeydew": true, "kiwi": true}

    setOfStringSets := map[int]map[string]bool{1: setA, 2: setB, 3: setC}

    for _, set := range setOfStringSets {
        fmt.Println(set)
    }
}

Output

Output:
map[apple:true banana:true cherry:true]
map[dog:true elephant:true fox:true]
map[grape:true honeydew:true kiwi:true]

Summary

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

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