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How to Filter Items of a Set based on a Condition in Go

How to Filter Items of a Set based on a Condition in Go ?

Answer

To filter items of a set based on a condition in Go, you can iterate over the set and selectively add items that satisfy the condition to a new set.


✐ Examples

1 Filter Even Numbers from a Set

In this example,

  1. First, we create a set of integers named numberSet with values []int{1, 2, 3, 4, 5, 6}.
  2. Next, we create a new set called evenNumbers.
  3. We iterate through each element of numberSet using a for loop.
  4. Within the loop, we check if the current number is even using the modulo operator %.
  5. If the number is even, we add it to the evenNumbers set.

Go Program

package main

import "fmt"

func main() {
    numberSet := []int{1, 2, 3, 4, 5, 6}
    evenNumbers := []int{}
    for _, num := range numberSet {
        if num % 2 == 0 {
            evenNumbers = append(evenNumbers, num)
        }
    }
    fmt.Println(evenNumbers)
}

Output

[2 4 6]

2 Filter Strings Starting with 'A' from a Set

In this example,

  1. First, we create a set of strings named stringSet with values []string{"Apple", "Banana", "Apricot", "Orange"}.
  2. Next, we create a new set called filteredStrings.
  3. We iterate through each element of stringSet using a for loop.
  4. Within the loop, we check if the current string starts with 'A' using string comparison.
  5. If the string starts with 'A', we add it to the filteredStrings set.

Go Program

package main

import (
    "fmt"
    "strings"
)

func main() {
    stringSet := []string{"Apple", "Banana", "Apricot", "Orange"}
    filteredStrings := []string{}
    for _, str := range stringSet {
        if strings.HasPrefix(str, "A") {
            filteredStrings = append(filteredStrings, str)
        }
    }
    fmt.Println(filteredStrings)
}

Output

[Apple Apricot]

Summary

In this tutorial, we learned How to Filter Items of a Set based on a Condition in Go language with well detailed examples.


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