From: Wolfgang Bangerth Date: Mon, 6 Apr 2015 15:38:44 +0000 (-0500) Subject: Update docs for a statement one of my students just stumbled over. X-Git-Tag: v8.3.0-rc1~313^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9f60a91f0c5beb72c17db6a31038c84612e8d22b;p=dealii.git Update docs for a statement one of my students just stumbled over. --- diff --git a/examples/step-49/step-49.cc b/examples/step-49/step-49.cc index 592cafc54c..456205758f 100644 --- a/examples/step-49/step-49.cc +++ b/examples/step-49/step-49.cc @@ -65,8 +65,11 @@ void mesh_info(const Triangulation &tria, << " dimension: " << dim << std::endl << " no. of cells: " << tria.n_active_cells() << std::endl; - // Next loop over all faces of all cells and find how often each boundary - // indicator is used: + // Next loop over all faces of all cells and find how often each + // boundary indicator is used (recall that if you access an element + // of a std::map object that doesn't exist, it is implicitly created + // and default initialized -- to zero, in the current case -- before + // we then increment it): { std::map boundary_count; typename Triangulation::active_cell_iterator