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+.. SPDX-License-Identifier: GPL-3.0-or-later
+
+Generics library
+----------------
+
+This small collection of "generics" was born out of frustration that I couldn't find no
+such thing for C. It's either bloated, has poor interface, null-checking is absent or
+doesn't allow custom allocation scheme. BSD-licensed (or compatible) code is allowed here,
+as long as it comes with a test case in `tests/test_generics.c`.
+
+* array_ - a set of simple macros to make working with dynamic arrays easier.
+* queue_ - a FIFO + LIFO queue.
+* map_ - a `Crit-bit tree`_ key-value map implementation (public domain) that comes with tests.
+* set_ - set abstraction implemented on top of ``map`` (unused now).
+* pack_ - length-prefixed list of objects (i.e. array-list).
+* lru_ - LRU-like hash table
+* trie_ - a trie-based key-value map, taken from knot-dns
+
+array
+~~~~~
+
+.. doxygenfile:: array.h
+   :project: libkres
+
+queue
+~~~~~
+
+.. doxygenfile:: queue.h
+   :project: libkres
+
+map
+~~~
+
+.. doxygenfile:: map.h
+   :project: libkres
+
+set
+~~~
+
+.. doxygenfile:: set.h
+   :project: libkres
+
+pack
+~~~~
+
+.. doxygenfile:: pack.h
+   :project: libkres
+
+lru
+~~~
+
+.. doxygenfile:: lru.h
+   :project: libkres
+
+trie
+~~~~
+
+.. doxygenfile:: trie.h
+   :project: libkres
+
+
+.. _`Crit-bit tree`: https://cr.yp.to/critbit.html