when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. List<StrategyWeight>? costs,
    2. List<XrayDuration>? baselines,
    3. int? expected,
    4. XrayDuration? maxRTT,
    5. double? tolerance,
    )
)

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( List<StrategyWeight>? costs,  List<XrayDuration>? baselines,  int? expected,  XrayDuration? maxRTT,  double? tolerance)  $default,) {final _that = this;
switch (_that) {
case _StrategyLeastLoadConfig():
return $default(_that.costs,_that.baselines,_that.expected,_that.maxRTT,_that.tolerance);case _:
  throw StateError('Unexpected subclass');

}
}