maybeWhen<TResult extends Object?> method

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>({ TResult str(String field0)?, TResult int(PlatformInt64 field0)?, TResult float(double field0)?, TResult bool(bool field0)?, TResult listStr(List<String> field0)?, TResult listInt(Int64List field0)?, 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(String field0)? str,
  TResult Function(PlatformInt64 field0)? int,
  TResult Function(double field0)? float,
  TResult Function(bool field0)? bool,
  TResult Function(List<String> field0)? listStr,
  TResult Function(Int64List field0)? listInt,
  required TResult orElse(),
}) {
  final _that = this;
  switch (_that) {
    case PyArgument_Str() when str != null:
      return str(_that.field0);
    case PyArgument_Int() when int != null:
      return int(_that.field0);
    case PyArgument_Float() when float != null:
      return float(_that.field0);
    case PyArgument_Bool() when bool != null:
      return bool(_that.field0);
    case PyArgument_ListStr() when listStr != null:
      return listStr(_that.field0);
    case PyArgument_ListInt() when listInt != null:
      return listInt(_that.field0);
    case _:
      return orElse();
  }
}