maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult splToken(
    1. SplTokenProgramAccountData parsed
    )?,
  2. TResult token2022(
    1. SplTokenProgramAccountData parsed
    )?,
  3. TResult stake(
    1. StakeProgramAccountData parsed
    )?,
  4. TResult unsupported(
    1. Map<String, dynamic> parsed
    )?,
  5. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function( SplTokenProgramAccountData parsed)?  splToken,TResult Function( SplTokenProgramAccountData parsed)?  token2022,TResult Function( StakeProgramAccountData parsed)?  stake,TResult Function( Map<String, dynamic> parsed)?  unsupported,required TResult orElse(),}) {final _that = this;
switch (_that) {
case ParsedSplTokenProgramAccountData() when splToken != null:
return splToken(_that.parsed);case ParsedSplToken2022ProgramAccountData() when token2022 != null:
return token2022(_that.parsed);case ParsedStakeProgramAccountData() when stake != null:
return stake(_that.parsed);case UnsupportedProgramAccountData() when unsupported != null:
return unsupported(_that.parsed);case _:
  return orElse();

}
}