when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult android(),
  2. required TResult ios(),
  3. required TResult macos(),
  4. required TResult web(),
  5. required TResult linux(),
  6. required TResult windows(),
  7. required TResult fuchsia(),
})

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()  android,required TResult Function()  ios,required TResult Function()  macos,required TResult Function()  web,required TResult Function()  linux,required TResult Function()  windows,required TResult Function()  fuchsia,}) {final _that = this;
switch (_that) {
case AndroidPlatform():
return android();case IosPlatform():
return ios();case MacosPlatform():
return macos();case WebPlatform():
return web();case LinuxPlatform():
return linux();case WindowsPlatform():
return windows();case FuchsiaPlatform():
return fuchsia();}
}