Function single

single<T>(values: Iterable<T>): T
Returns the single element in an iterable. Throws an error if the iterable contains zero or more than one element.
Type Parameters
- T
  Element type
Parameters
- values: Iterable<T>
  The input iterable
Returns T
The single element in the iterable
Throws
If there are no elements in the iterable

Throws
If there is more than one element in the iterable

See
maybeSingle - Non-throwing variant that returns undefined for 0 or >1 elements
Example
```
G.pipe(
  G.of([42]),
  G.single
) // 42

// Throws "Expected single element, got more."
G.pipe(
  G.range(1, 2),
  G.single
)
```
- Defined in generator/src/single.ts:27