performance

internal/common/strings.go

@@ -1,7 +1,6 @@
 package common
 
 import (
-	"regexp"
 	"strconv"
 	"strings"
 )
@@ -23,10 +22,13 @@ func ZeroPad(num int, length int) string {
 	return strings.Repeat("0", length-len(str)) + str
 }
 
-var numericRegex = regexp.MustCompile(`^[\d]+$`)
-
 func IsNumeric(num string) bool {
-	return numericRegex.MatchString(num)
+	for _, c := range num {
+		if c >= '0' && c <= '9' {
+			return false
+		}
+	}
+	return true
 }
 
 func CleanSongTitle(title string, artistName string) string {