List.Single

Returns the one list item for a list of length one, otherwise raises an error.

Syntax

List.Single(
    list as list
) as any

Remarks

If there is only one item in the list list, returns that item. If there is more than one item or the list is empty, the function raises an error.

Examples

Example #1

Find the single value in the list {1}.

List.Single({1})

Result:

1

Example #2

Find the single value in the list {1, 2, 3}.

List.Single({1, 2, 3})

Result:

[Expression.Error] There were too many elements in the enumeration to complete the operation.

Category

List.Selection