úÎ å ‚ Safe-Inferred6The Counter type is an alias of Data.Map.Strict.Map."Initialize a counter with no keys.7Initialize a counter with a single instance of a key.@Increment the frequency count of a key with a specified value.,Increment the frequency count of a key by 1.'Convert a list of items into a counter."Returns the union of two counters.Key to be inserted. New counter.Key to be inserted.Specified frequency count. Old counter. New counter.Key to be inserted. Old counter. New counter. List of keys. New counter.First counter.Second counter.Union of both counters. counter-0.1.0.0 Data.CounterCounterempty singleton updateWithupdatecountunion