---
title: startIndex
framework: createmlcomponents
role: symbol
role_heading: Instance Property
path: createmlcomponents/slidingwindows/startindex
---

# startIndex

The position of the first window.

## Declaration

```swift
var startIndex: Int { get }
```

## See Also

### Inspecting the sliding window

- [endIndex](createmlcomponents/slidingwindows/endindex.md)
- [input](createmlcomponents/slidingwindows/input.md)
- [length](createmlcomponents/slidingwindows/length.md)
- [stride](createmlcomponents/slidingwindows/stride.md)