package piwigotools type Categories []*Category type Category struct { Id int `json:"id"` Name string `json:"name"` ImagesCount int `json:"nb_images"` TotalImagesCount int `json:"total_nb_images"` Url string `json:"url"` } func (c *Categories) Names() []string { names := make([]string, len(*c)) for i, category := range *c { names[i] = category.Name } return names }