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+# Generic Types, Traits, and Lifetimes
+
+
+# Generics
+A tools for effectively handling the duplication of concepts.
+
+One of these tools is *generics*
+
+They are abstract stand-ins for concrete types or other properties
+
+We can express the behavior of generics or how they relate to other generics without knowing what type that will be in plcae when copiling and running the code.
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