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

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

Answer

To convert a set of floats to a set of strings in Go, you can use a map to store the string representations of the floats. This approach leverages the fact that maps in Go are inherently unique.

✐ Examples

1 Convert Set of Floats to Set of Strings Example

In this example,

We start by creating a set named floatSet using a slice literal, which contains the float values 1.1, 2.2, and 3.3.
Next, we declare a map named stringMap where the keys are strings and values are boolean (since we're interested in uniqueness, not the value itself).
We iterate over floatSet using a for loop and convert each float to its string representation using the fmt.Sprintf function. We then add this string to stringMap with a dummy boolean value.
Since maps in Go cannot have duplicate keys, this process effectively removes duplicates, resulting in a set-like behavior.
The final set of strings is represented by the keys of stringMap.
We print the set of strings using the fmt.Println function.

Go Program

package main

import (
	"fmt"
)

func main() {
	floatSet := []float64{1.1, 2.2, 3.3}
	stringMap := make(map[string]bool)

	for _, f := range floatSet {
		stringMap[fmt.Sprintf("%g", f)] = true
	}

	var stringSet []string
	for key := range stringMap {
		stringSet = append(stringSet, key)
	}

	fmt.Println(stringSet)
}

Output

[1.1 2.2 3.3]

Summary

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

◀ Previous Next ▶

Go Tutorials

Go Programs

Go How-Tos