Example
Struct fields can have tags associated with them. These tags can be read by the reflect package to get custom information specified about a field by the developer.
struct Account {
Username string `json:"username"`
DisplayName string `json:"display_name"`
FavoriteColor string `json:"favorite_color,omitempty"`
}
In the above example, the tags are used to change the key names used by the encoding/json package when marshaling or unmarshaling JSON.
While the tag can be any string value, it's considered best practice to use space separated key:"value" pairs:
struct StructName {
FieldName int `package1:"customdata,moredata" package2:"info"`
}
The struct tags used with the encoding/xml and encoding/json package are used throughout the standard libarary.
