It always amazes me how many people either never noticed merge-with or simply don't use it. Having done something similar with a list of words (created via reg

It always amazes me how many people either never noticed merge-with or simply don't use it. Having done something similar with a list of words (created via regex parsed over a file) I adore what you can do with it. Especially if you use transients. Unless of course they just didn't think of the fact strings are seqs in clojure by default. edit: I could be crazy, but one problem with using apply is you force the realization of your object, so while in THIS case it's fine, using larger amount of data would cause a problem. IIRC more space sane way to do this is use (reduce {} (merge-with + %) list) and man I MUST be rusty, I can't remember if the default value comes before or after the function, and no repl handy. Hopefully the point is gotten across :)