---
title: "isNil(at:)"
framework: tabulardata
role: symbol
role_heading: Instance Method
path: "tabulardata/discontiguouscolumnslice/isnil(at:)"
---

# isNil(at:)

Returns a Boolean that indicates whether the element at the index is missing.

## Declaration

```swift
func isNil(at index: Int) -> Bool
```

## Parameters

- `index`: An index.

## See Also

### Inspecting a Column Slice

- [name](tabulardata/discontiguouscolumnslice/name.md)
- [count](tabulardata/discontiguouscolumnslice/count.md)
- [wrappedElementType](tabulardata/discontiguouscolumnslice/wrappedelementtype.md)
- [argmin()](tabulardata/discontiguouscolumnslice/argmin().md)
- [argmax()](tabulardata/discontiguouscolumnslice/argmax().md)