Function clippy_lints::utils::implements_trait

pub fn implements_trait<'a, 'tcx>(cx: &LateContext<'a, 'tcx>,
                                  ty: Ty<'tcx>,
                                  trait_id: DefId,
                                  ty_params: Vec<Ty<'tcx>>)
                                  -> bool

Check whether a type implements a trait. See also get_trait_def_id.