when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult directConvoMember(
    1. DirectConvoMember data
    ),
  2. required TResult groupConvoMember(
    1. GroupConvoMember data
    ),
  3. required TResult pastGroupConvoMember(
    1. PastGroupConvoMember data
    ),
  4. required TResult unknown(
    1. Map<String, dynamic> data
    ),
})

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function( DirectConvoMember data)  directConvoMember,required TResult Function( GroupConvoMember data)  groupConvoMember,required TResult Function( PastGroupConvoMember data)  pastGroupConvoMember,required TResult Function( Map<String, dynamic> data)  unknown,}) {final _that = this;
switch (_that) {
case UProfileViewBasicKindDirectConvoMember():
return directConvoMember(_that.data);case UProfileViewBasicKindGroupConvoMember():
return groupConvoMember(_that.data);case UProfileViewBasicKindPastGroupConvoMember():
return pastGroupConvoMember(_that.data);case UProfileViewBasicKindUnknown():
return unknown(_that.data);}
}