whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. Sub2ApiAdminQuotaPlatform platform,
    2. Sub2ApiDecimal? dailyLimitUsd,
    3. Sub2ApiDecimal? weeklyLimitUsd,
    4. Sub2ApiDecimal? monthlyLimitUsd,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

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

Implementation

@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  TResult? Function(
    Sub2ApiAdminQuotaPlatform platform,
    Sub2ApiDecimal? dailyLimitUsd,
    Sub2ApiDecimal? weeklyLimitUsd,
    Sub2ApiDecimal? monthlyLimitUsd,
  )?
  $default,
) {
  final _that = this;
  switch (_that) {
    case _Sub2ApiAdminPlatformQuotaInput() when $default != null:
      return $default(
        _that.platform,
        _that.dailyLimitUsd,
        _that.weeklyLimitUsd,
        _that.monthlyLimitUsd,
      );
    case _:
      return null;
  }
}