From 62e2ec9c7e6dc692e217709d6b6d9adbd72865a7 Mon Sep 17 00:00:00 2001
From: tobiglaser <76131623+tobiglaser@users.noreply.github.com>
Date: Fri, 6 May 2022 00:00:18 +0200
Subject: [PATCH] adding static vs member demo
---
CMakeLists.txt | 5 +++++
src/class-member-variables.cpp | 34 ++++++++++++++++++++++++++++++++++
2 files changed, 39 insertions(+)
create mode 100644 src/class-member-variables.cpp
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 488803a..a2eb145 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,11 @@ src/testCommandList.cpp
target_include_directories("Info3_Praktikum-test" PUBLIC include/)
+add_executable("Class-Member-Variable-demo"
+src/class-member-variables.cpp
+)
+
+
# Doxygen documentation
find_package(Doxygen)
if (DOXYGEN_FOUND)
diff --git a/src/class-member-variables.cpp b/src/class-member-variables.cpp
new file mode 100644
index 0000000..790a705
--- /dev/null
+++ b/src/class-member-variables.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+
+using std::cout;
+using std::string;
+
+class ControlDeveloper
+{
+private:
+ // class variable
+ // explicit "inline" to initialize in this translatin unit
+ inline static string CD_Class = "CLASS Control-Developer";
+ // member variable
+ const string CD_Member = "MEMBER Control-Developer";
+public:
+ // declare static to be called without object
+ static string getCDClass() { return CD_Class; }
+ // regular getter
+ string getCDMember() { return CD_Member; }
+};
+
+
+main()
+{
+ cout << "Demonstration of class vs. member variables:\n";
+ cout << "Without constructing an object we can call the static getter from the CD namespace:\n";
+ cout << "CD_Class: " << ControlDeveloper::getCDClass() << '\n';
+ cout << "To be able to get the member variable we need to construct";
+ cout << " an object as the value will be specifically created for every object.\n";
+ ControlDeveloper cd = ControlDeveloper();
+ cout << "We can now call the non static getter:\n";
+ cout << "CD_Member: " << cd.getCDMember() << '\n';
+ cout << "We can now also use the object to call the static getter (with the same effect):\n";
+ cout << "CD_Class: " << cd.getCDClass() << '\n';
+}
\ No newline at end of file
--
GitLab