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+# Introduction
+
+This is page tries to enumerate the Use Cases that call for generics and give a Go alternative without using generics.
+
+Who knows, you might find you really didn't need generics for that at all!
+
+
+# Details
+
+**FIRST USE CASE: Generic Algorithm on data whose Type you Don't Yet Know**
+
+...but needs to follow some Properties or Behaviours...
+
+You just use interfaces to define the properties or behaviours your data needs to be able to be used by your Generic Algorithm. As exemplified by the sort package:
+
+http://golang.org/pkg/sort/#Interface
+
+# Unresolved USE CASES
+
+- map() in Python: **map(lambda x:x\*2, range(100))**:
+```
+ func Map(f interface{}, v interface{}) interface{} {
+ // Reflection to solve f and v types
+ }
+```
+The reflect solution performance is really bad
+
+- Polymorphic functions that operate on built-in generic types.
+```
+ func KeyIntersection(a map[T1]T2, b map[T1]T2) map[T1]T2 {}
+```
+
+- Containers that must store non-interface values. (Various
+motivations: control memory layout, require an immutable copy...)
+
+# Under construction...
+
+This page is under construction.
+
+It feeds from a discussion thread on golang nuts:
+http://groups.google.com/group/golang-nuts/browse_thread/thread/3d825ac84e742598
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