package util

import (
	"math"
	"strconv"
	"regexp"
)

func StringToInt64(str string) int64 {
	n, _ := strconv.ParseInt(str, 10,64)
	return n
}

func round(num float64) int {
	return int(num + math.Copysign(0.5, num))
}

func ToFixed(num float64, precision int) float64 {
	output := math.Pow(10, float64(precision))
	return float64(round(num*output)) / output
}

func ExtractInBracket(str string) string {
	regex := regexp.MustCompile(`\[(.*?)\]`)
	return regex.FindStringSubmatch(str)[1]
}