when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. bool autoShow,
    2. RefreshController<T>? controller,
    3. SearchSupportCoreUiBuild childBuilder,
    4. SearchSupportActionListening? listening,
    )
)

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?>(TResult Function( bool autoShow,  RefreshController<T>? controller,  SearchSupportCoreUiBuild childBuilder,  SearchSupportActionListening? listening)  $default,) {final _that = this;
switch (_that) {
case _SearchSupportParams():
return $default(_that.autoShow,_that.controller,_that.childBuilder,_that.listening);}
}