minify<K> function
Minimizes the JSON map to be stored into DB or sent over internet by removing the entries whose value is null.
It can be useful when implementing a plugin, since you don't have to store the null values (in a key-value-type database).
It is also useful if an entity contains a PODO object whose
toJson()
returns a map with several null values, such as
class Inner {
String some;
String another;
toJson() => minify({"some": some, "another": another})
}
Implementation
Map<K, dynamic>? minify<K>(Map<K, dynamic>? json)
=> json == null ? null: minifyNS(json);