# tmux.TerminalFeatures.Len

- **Module:** tmux.TerminalFeatures
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/complex_options.go#L109
- **Page:** https://libtmux.org/reference/go/tmux-terminalfeatures-len/

```
tmux.TerminalFeatures.Len() -> int
```

Len returns the number of distinct terminal patterns.