lib/fasterer/offense.rb in fasterer-0.3.2 vs lib/fasterer/offense.rb in fasterer-0.4.0

@@ -45,10 +45,10 @@
 
       fetch_with_argument_vs_block:
         'Hash#fetch with second argument is slower than Hash#fetch with block',
 
       keys_each_vs_each_key:
-        'Hash#keys.each is slower than Hash#each_key',
+        'Hash#keys.each is slower than Hash#each_key. N.B. Hash#each_key cannot be used if the hash is modified during the each block',
 
       hash_merge_bang_vs_hash_brackets:
         'Hash#merge! with one argument is slower than Hash#[]',
 
       block_vs_symbol_to_proc: