Added trimP and concatP to string utils

address_utils/address_utils.go

@@ -8,7 +8,7 @@ import (
 	"strings"
 )
 
-// MD5HashOfAddress calculates and returns the MD5 hash of the entered address, lat and lng concatenated together. If lat and lng is blank, it is only the hash of the entered address
+// MD5HashOfAddress m(E,L,L) - calculates and returns the MD5 hash of the entered address, lat and lng concatenated together. If lat and lng is blank, it is only the hash of the entered address
 func MD5HashOfAddress(enteredAddress string, lat *float64, lng *float64) string {
 	valueToHash := enteredAddress
 	if lat != nil && lng != nil {
@@ -18,7 +18,7 @@ func MD5HashOfAddress(enteredAddress string, lat *float64, lng *float64) string
 	return fmt.Sprintf("%X", md5.Sum([]byte(valueToHash)))
 }
 
-// MD5HashOfLowerCaseEnteredAddress calculates and returns the MD5 hash of a string after preparing the string properly.
+// MD5HashOfLowerCaseEnteredAddress m(e) - calculates and returns the MD5 hash of a string after preparing the string properly.
 func MD5HashOfLowerCaseEnteredAddress(enteredAddress string) string {
 	valueToHash := cleanLowerCaseAddress(enteredAddress)
 	return fmt.Sprintf("%X", md5.Sum([]byte(valueToHash)))

string_utils/string_utils.go

@@ -83,3 +83,29 @@ func UnwrapString(s *string) string {
 	}
 	return *s
 }
+
+//trim specified strings, replacing empty string with nil
+func Trimp(sp *string) *string {
+	if sp == nil {
+		return nil
+	}
+	s := strings.TrimSpace(*sp)
+	if s == "" {
+		return nil
+	}
+	return &s
+}
+
+//concatenate all specified non-empty strings with ", " separators
+func Concatp(args ...*string) string {
+	s := ""
+	for _, arg := range args {
+		if args != nil && *arg != "" {
+			if s != "" {
+				s += ", "
+			}
+			s += *arg
+		}
+	}
+	return s
+}
\ No newline at end of file