From 3ad453d5e3725f92db4e5ba06865ab6f9020bed5 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Fri, 22 Mar 2024 08:19:43 +0100
Subject: [PATCH] FEM: fix some linter warnings

---
 src/Mod/Fem/App/FemPostObject.cpp | 4 ++--
 src/Mod/Fem/App/FemPostObject.h   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Mod/Fem/App/FemPostObject.cpp b/src/Mod/Fem/App/FemPostObject.cpp
index 1312514587..8a30f5755a 100644
--- a/src/Mod/Fem/App/FemPostObject.cpp
+++ b/src/Mod/Fem/App/FemPostObject.cpp
@@ -116,7 +116,7 @@ std::string vtkWriterExtension(const vtkSmartPointer<vtkDataObject>& dataObject)
 
 }  // namespace
 
-void FemPostObject::writeVTK(const char* filename)
+void FemPostObject::writeVTK(const char* filename) const
 {
     const vtkSmartPointer<vtkDataObject>& data = Data.getValue();
 
@@ -127,7 +127,7 @@ void FemPostObject::writeVTK(const char* filename)
         throw Base::TypeError("Unsupported data type");
     }
 
-    std::string::size_type pos = name.find_last_of(".");
+    std::string::size_type pos = name.find_last_of('.');
     if (pos != std::string::npos) {
         name = name.substr(0, pos + 1).append(extension);
     }
diff --git a/src/Mod/Fem/App/FemPostObject.h b/src/Mod/Fem/App/FemPostObject.h
index 3ef13d1319..5f70614a7c 100644
--- a/src/Mod/Fem/App/FemPostObject.h
+++ b/src/Mod/Fem/App/FemPostObject.h
@@ -48,7 +48,7 @@ public:
     PyObject* getPyObject() override;
 
     vtkBoundingBox getBoundingBox();
-    void writeVTK(const char* filename);
+    void writeVTK(const char* filename) const;
 };
 
 }  // namespace Fem