# io.github.libtmux.scaladsl.cats.Observation.isClosed

- **Module:** io.github.libtmux.scaladsl.cats
- **Package:** io.github.libtmux:libtmux-scala_3
- **Language:** Scala
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/f56392b5d9bc7f1f9c1631842333fb90f3d82d40/libtmux-scala-cats/src/main/scala/io/github/libtmux/scaladsl/cats/Observation.scala#L77
- **Page:** https://libtmux.org/en/scala/latest/reference/io-github-libtmux-scaladsl-cats-observation-isclosed/

```
def isClosed: F[Boolean]
```

Reports subscription closure, including after resource finalization.