when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. int? minSdkVersion,
    2. int? compileSdkVersion,
    3. int? targetSdkVersion
    )
)

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(
          int? minSdkVersion, int? compileSdkVersion, int? targetSdkVersion)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _AndroidPlatformConstraints():
      return $default(_that.minSdkVersion, _that.compileSdkVersion,
          _that.targetSdkVersion);
  }
}