# libtmux::first

- **Module:** libtmux
- **Package:** libtmux-cxx
- **Language:** C++
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-cxx/blob/393d4b0ad666f18a6581f1eb281741a75a7503f0/include/libtmux/cardinality.hpp#L52
- **Page:** https://libtmux.org/en/cxx/latest/reference/libtmux-first/

```
libtmux::first(Range: ReferenceRange, range: Range &) -> ReferenceRange
```

`first` states that a caller tolerates extras; it never reports several.