map<TResult extends Object?> method

  1. @optionalTypeArgs
TResult map<TResult extends Object?>({
  1. required TResult formData(
    1. _FormData value
    ),
  2. required TResult basic(
    1. _Basic value
    ),
  3. required TResult data(
    1. _Data value
    ),
})

A switch-like method, using callbacks.

Callbacks receives the raw object, upcasted. It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case final Subclass2 value:
    return ...;
}

Implementation

@optionalTypeArgs TResult map<TResult extends Object?>({required TResult Function( _FormData value)  formData,required TResult Function( _Basic value)  basic,required TResult Function( _Data value)  data,}){
final _that = this;
switch (_that) {
case _FormData():
return formData(_that);case _Basic():
return basic(_that);case _Data():
return data(_that);}
}