maybeMap<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  1. TResult error(
    1. WsErrorMsg value
    )?,
  2. TResult block(
    1. WsMsgBlockClient value
    )?,
  3. TResult tx(
    1. WsMsgTxClient value
    )?,
  4. required TResult orElse(),
})

A variant of map that fallback to returning orElse.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeMap<TResult extends Object?>({TResult Function( WsErrorMsg value)?  error,TResult Function( WsMsgBlockClient value)?  block,TResult Function( WsMsgTxClient value)?  tx,required TResult orElse(),}){
final _that = this;
switch (_that) {
case WsErrorMsg() when error != null:
return error(_that);case WsMsgBlockClient() when block != null:
return block(_that);case WsMsgTxClient() when tx != null:
return tx(_that);case _:
  return orElse();

}
}