c++: template class with static member

2026-01-23 02:05:57 +01:00 · 2019-09-07 00:00:00 +00:00
parent cb3f2f6183
commit e1ceb85934
2 changed files with 21 additions and 0 deletions
--- a/userland/cpp/template_class_with_static_member.cpp
+++ b/userland/cpp/template_class_with_static_member.cpp
@@ -0,0 +1,20 @@
+// https://cirosantilli.com/linux-kernel-module-cheat#cpp
+
+#include <cassert>
+
+template <class T>
+struct MyClass {
+    static int i;
+    MyClass() {
+        i++;
+    }
+};
+
+template <class T>
+int MyClass<T>::i = 0;
+
+int main() {
+    MyClass<int>();
+    MyClass<int>();
+    assert(MyClass<int>::i == 2);
+}