Algorithm.single

Checks if there is exactly one element in an enumerable.

Arguments

The

enumerable
to check.

Return values

condition
is TRUE if there is one element, FALSE otherwise.

Complexity

Depends on the enumerable.

Example

"sl/algorithm" useFile
"sl/linkedList" useFile
a: (1) makeList;
a single print LF print
(2) single print LF print
a range single print
Try it
Output:
TRUE TRUE TRUE