clean up

README.md

@@ -16,20 +16,20 @@ Step20 is a C++20, header-only library of STL-like algorithms and data structure
 ### Table of Contents (wiki, examples)
 
 * [edit distance](https://en.wikipedia.org/wiki/Levenshtein_distance):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L141-L148)
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L136-L143)
 * [LFU cache](https://en.wikipedia.org/wiki/Least_frequently_used):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L283-L293)
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L278-L288)
 * [LRU cache](https://en.wikipedia.org/wiki/Cache_replacement_policies#LRU):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L299-L308)
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L294-L303)
 * [longest common subsequence](https://en.wikipedia.org/wiki/Longest_common_subsequence_problem):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L337-L341),
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L332-L336),
   [example](https://github.com/storm-ptr/step20/blob/main/example/diff/diff.hpp#L49-L67)
 * [longest common substring](https://en.wikipedia.org/wiki/Longest_common_substring_problem):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L358-L362)
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L353-L357)
 * [longest repeated substring](https://en.wikipedia.org/wiki/Longest_repeated_substring_problem):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L404-L406)
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L399-L401)
 * [suffix array](https://en.wikipedia.org/wiki/Suffix_array):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L485-L486)
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L480-L481)
 * [suffix tree](https://en.wikipedia.org/wiki/Suffix_tree):
-  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L514-L515),
+  [snippet](https://github.com/storm-ptr/step20/blob/main/test/main.cpp#L509-L510),
   [example](https://github.com/storm-ptr/step20/blob/main/example/suffix_tree_viz/suffix_tree_viz.hpp#L16-L42)

test/main.cpp

@@ -1,10 +1,5 @@
 // Andrew Naplavkov
 
-// clang-cl workaround
-#ifndef __cpp_consteval
-#define __cpp_consteval 201811L
-#endif
-
 #include <cctype>
 #include <iostream>
 #include <random>