# libtmux::FilterExpr::RelationTest

- **Module:** libtmux::FilterExpr
- **Package:** libtmux-cxx
- **Language:** C++
- **Kind:** struct
- **Source:** https://github.com/libtmux/libtmux-cxx/blob/85e8bd603a322dc32bb8b9aeb1a72bcf36945f1d/include/libtmux/filter_expr.hpp#L97
- **Page:** https://libtmux.org/reference/cxx/libtmux-filterexpr-relationtest/

## Members

- `relation` (attribute)
- `quantifier` (attribute)
- `evaluate` (attribute)
- `child` (attribute) — The child compares another entity, so it cannot live in this variant.