when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult value(
    1. T val
    ),
  2. required TResult error(
    1. ZIssues rawIssues
    ),
})

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function( T val)  value,required TResult Function( ZIssues rawIssues)  error,}) {final _that = this;
switch (_that) {
case ZValue():
return value(_that.val);case ZError():
return error(_that.rawIssues);}
}