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How to Convert a Set of Strings to a Set of Integers in Go

How to Convert a Set of Strings to a Set of Integers in Go ?

Answer

In Go, you can convert a set of strings to a set of integers by iterating through the set and using the strconv.Atoi() function to convert each string to an integer.


✐ Examples

1 Convert a Set of Strings to a Set of Integers using strconv.Atoi()

In this example,

  1. We have a set named stringSet1 containing the elements '1', '2', '3', '4', '5'.
  2. We iterate through stringSet1 and use strconv.Atoi() to convert each string element to an integer.
  3. We add the converted integers to a new set named intSet1.
  4. We print the resulting intSet1 to the console.

Go Program

package main

import (
    "fmt"
    "strconv"
)

func main() {
    stringSet1 := map[string]struct{}{"1": {}, "2": {}, "3": {}, "4": {}, "5": {}}
    intSet1 := make(map[int]struct{})

    for str := range stringSet1 {
        if i, err := strconv.Atoi(str); err == nil {
            intSet1[i] = struct{}{}
        }
    }

    fmt.Println(intSet1)
}

Output

map[1:{} 2:{} 3:{} 4:{} 5:{}]

2 Convert a Set of Strings to a Set of Integers using strconv.ParseInt()

In this example,

  1. We have a set named stringSet2 containing the elements '10', '20', '30', '40', '50'.
  2. We iterate through stringSet2 and use strconv.ParseInt() to convert each string element to an integer.
  3. We add the converted integers to a new set named intSet2.
  4. We print the resulting intSet2 to the console.

Go Program

package main

import (
    "fmt"
    "strconv"
)

func main() {
    stringSet2 := map[string]struct{}{"10": {}, "20": {}, "30": {}, "40": {}, "50": {}}
    intSet2 := make(map[int]struct{})

    for str := range stringSet2 {
        if i, err := strconv.ParseInt(str, 10, 64); err == nil {
            intSet2[int(i)] = struct{}{}
        }
    }

    fmt.Println(intSet2)
}

Output

map[10:{} 20:{} 30:{} 40:{} 50:{}]

Summary

In this tutorial, we learned How to Convert a Set of Strings to a Set of Integers in Go language with well detailed examples.


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