---
title: a
framework: combine
role: symbol
role_heading: Instance Property
path: combine/publishers/zip4/a
---

# a

A publisher to zip.

## Declaration

```swift
let a: A
```

## See Also

### Inspecting publisher properties

- [b](combine/publishers/zip4/b.md)
- [c](combine/publishers/zip4/c.md)
- [d](combine/publishers/zip4/d.md)