whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String userId,
    2. String displayName,
    3. String skillId,
    4. String skillName,
    5. String category,
    6. int expectedMastery,
    7. double actualMastery,
    8. double gap,
    )?
)

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 userId,  String displayName,  String skillId,  String skillName,  String category,  int expectedMastery,  double actualMastery,  double gap)?  $default,) {final _that = this;
switch (_that) {
case _SkillGapEntry() when $default != null:
return $default(_that.userId,_that.displayName,_that.skillId,_that.skillName,_that.category,_that.expectedMastery,_that.actualMastery,_that.gap);case _:
  return null;

}
}