map -package:vector -package:case-insensitive -package:ghc -package:blaze-html -package:basement -package:incipit-base -package:charset -package:imports -package:base is:exact package:hedgehog
Generates a map using a
Range to determine the length.
This may fail to generate anything if the keys produced by the
generator do not account for a large enough number of unique
items to satify the required map size.