IEnumerable<T>.DefaultIfEmpty Method
Overloads
| DefaultIfEmpty |
Returns the elements of the sequence or the default value in a sequence if the sequence is empty. |
| DefaultIfEmpty(T) |
Returns the elements of the sequence or the specified default value in sequence if the sequence is empty. |
Returns the elements of the sequence or the default value in a sequence if the sequence is empty.
Delphi
function DefaultIfEmpty: IEnumerable<T>Returns
IEnumerable<T>
A sequence that contains Default(T) if source is empty;
otherwise, source .
Returns the elements of the sequence or the specified default value in sequence if the sequence is empty.
Delphi
function DefaultIfEmpty(const defaultValue: T): IEnumerable<T>Parameters
- defaultValue
- T
The value to return if the sequence is empty.
Returns
IEnumerable<T>
A sequence that contains defaultValue if source is
empty; otherwise, source .