Return the index of the added element

entry.go

@@ -66,10 +66,10 @@ func NewEntry(title string) *Entry {
 	}
 }
 
-// AddAuthor adds the Person as an author to the Entry.
-func (e *Entry) AddAuthor(p *Person) {
-	addToSlice(&e.Authors, p)
+// AddAuthor adds the Person as an author to the Entry. It returns an int.
+func (e *Entry) AddAuthor(p *Person) int {
 	e.Updated = NewDate(time.Now())
+	return addToSlice(&e.Authors, p)
 }
 
 // DeleteAuthor deletes the Person at index from the Entry. It return an error.
@@ -82,10 +82,10 @@ func (e *Entry) DeleteAuthor(index int) error {
 	return nil
 }
 
-// AddCategory adds the Category to the Entry.
-func (e *Entry) AddCategory(c *Category) {
-	addToSlice(&e.Categories, c)
+// AddCategory adds the Category to the Entry. It returns an int.
+func (e *Entry) AddCategory(c *Category) int {
 	e.Updated = NewDate(time.Now())
+	return addToSlice(&e.Categories, c)
 }
 
 // DeleteCategory deletes the Category at index from the Entry. It return an
@@ -99,10 +99,11 @@ func (e *Entry) DeleteCategory(index int) error {
 	return nil
 }
 
-// AddContributor adds the Person as a contributor to the Entry.
-func (e *Entry) AddContributor(c *Person) {
-	addToSlice(&e.Contributors, c)
+// AddContributor adds the Person as a contributor to the Entry. It returns an
+// int.
+func (e *Entry) AddContributor(c *Person) int {
 	e.Updated = NewDate(time.Now())
+	return addToSlice(&e.Contributors, c)
 }
 
 // DeleteContributor deletes the Person at index from the Entry. It return an
@@ -116,10 +117,10 @@ func (e *Entry) DeleteContributor(index int) error {
 	return nil
 }
 
-// AddLink adds the Link to the Entry.
-func (e *Entry) AddLink(l *Link) {
-	addToSlice(&e.Links, l)
+// AddLink adds the Link to the Entry. It returns an int.
+func (e *Entry) AddLink(l *Link) int {
 	e.Updated = NewDate(time.Now())
+	return addToSlice(&e.Links, l)
 }
 
 // DeleteLink deletes the Link at index from the Entry. It return an error.
@@ -132,10 +133,10 @@ func (e *Entry) DeleteLink(index int) error {
 	return nil
 }
 
-// AddExtension adds the ExtensionElement to the Entry.
-func (e *Entry) AddExtension(x *ExtensionElement) {
-	addToSlice(&e.Extensions, x)
+// AddExtension adds the ExtensionElement to the Entry. It returns an int.
+func (e *Entry) AddExtension(x *ExtensionElement) int {
 	e.Updated = NewDate(time.Now())
+	return addToSlice(&e.Extensions, x)
 }
 
 // DeleteExtension deletes the Extension at index from the Entry. It return an