JuliaLang/julia — comment on commit 08bd95624f10e4dfb720f6ef88eb3ec564789528
File:  line 0
By StefanKarpinski:

Also realized that `union!` is really similar to `add_each`, so we might as well just have one. Contemplated making and `add_each(s, xss...)` method, but decided that might give Jeff an aneurysm.