whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String assetSymbol,
    2. String assetName,
    3. int decimals,
    4. String? iconUrl,
    5. String? networkName,
    6. String? networkIconUrl,
    )?
)

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( String assetSymbol,  String assetName,  int decimals,  String? iconUrl,  String? networkName,  String? networkIconUrl)?  $default,) {final _that = this;
switch (_that) {
case _AmountDisplay() when $default != null:
return $default(_that.assetSymbol,_that.assetName,_that.decimals,_that.iconUrl,_that.networkName,_that.networkIconUrl);case _:
  return null;

}
}