# Sequence.filter(_:)

- **Module:** Sequence
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-swift/blob/f02a4668570e1cc5198c941413750e021f42c214/Sources/LibTmux/FilterExpr.swift#L312
- **Page:** https://libtmux.org/reference/swift/sequence-filter(_-)/

```
Sequence.filter(_:)(expression: FilterExpr<Element>) -> [Self.Element]
```

Every element the filter matches, in order.

Returns a plain array: ordered, replayable, and free of any live
connection to tmux.

## Raises

- `RegexMatchError`