Question

How to extract a float from a string in Go

Answer 1

package main

import (
    "fmt"
    "regexp"
    "strconv"
)

func main() {
    text := "The price is 148.95 dollars"

    floatRegex := regexp.MustCompile(`[-+]?\d*\.\d+|\d+`)
    match := floatRegex.FindString(text)

    if match != "" {
        number, err := strconv.ParseFloat(match, 64)
        if err == nil {
            fmt.Printf("Extracted float: %.2f\n", number)
        } else {
            fmt.Println("Error parsing float:", err)
        }
    }
}



/*
run:

Extracted float: 148.95

*/

 

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