Merge pull request #88 from rezakhademix/feat-add-example-to-default-…

…rule-comments

feat: added usage example to default rule comments

default.go

@@ -2,6 +2,12 @@ package govalidator
 
 // DefaultInt sets a default value for any pointer to an int thats is passed
 // if value does not exists, then set the default specified as the new value.
+//
+// Example:
+//
+//	v := validator.New()
+//	var ZeroKelvin int64
+//	v.DefaultInt(&s, -273)
 func (v *Validator) DefaultInt(i *int, val int) *Validator {
 	if i == nil || *i == 0 {
 		*i = val
@@ -12,6 +18,12 @@ func (v *Validator) DefaultInt(i *int, val int) *Validator {
 
 // DefaultFloat sets a default value for any pointer to an float thats is passed
 // if value does not exists, then set the default specified as the new value.
+//
+// Example:
+//
+//	v := validator.New()
+//	var f float64
+//	v.DefaultFloat(&f, 3.14)
 func (v *Validator) DefaultFloat(f *float64, val float64) *Validator {
 	if f == nil || *f == 0 {
 		*f = val
@@ -22,6 +34,12 @@ func (v *Validator) DefaultFloat(f *float64, val float64) *Validator {
 
 // DefaultString sets a default value for a pointer to a string.
 // if value does not exists, then set the default specified as the new value.
+//
+// Example:
+//
+//	v := validator.New()
+//	var lang string
+//	v.DefaultString(&s, "persian")
 func (v *Validator) DefaultString(s *string, val string) *Validator {
 	if s == nil || *s == "" {
 		*s = val