Update README.md

mrgloom · Dec 8, 2016 · 919fa69 · 919fa69
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@@ -3,6 +3,21 @@ C++ tips tricks and idioms
 
 ~~~
 private constructor
+
 singleton pattern
+
 swap trick
+
+
+prevent class inheritance
+http://stackoverflow.com/questions/2184133/prevent-class-inheritance-in-c
+
+virtual destructor
+
+virtual inheritance
+http://stackoverflow.com/questions/21558/in-c-what-is-a-virtual-base-class
+
+virtual function
+http://stackoverflow.com/questions/2391679/why-do-we-need-virtual-functions-in-c
+
 ~~~