29.07.13 14:49, Joshua Landau написав(ла):
I find it hard to agree that counter should be optimised for the unique-data case, as surely it's much more oft used when there's a point to counting?
Different methods are faster for different data. LBYL approach is best for the mostly unique data case, while EAFP approach is best for the mostly repeated data case. In general case a performance of particular method is a function of its performances in this two extreme cases. When it slow for one of extreme case it can be slow in a number of intermediate cases.
Also, couldn't Counter just extend from defaultdict?
Unfortunately this only will slowdown it. -- http://mail.python.org/mailman/listinfo/python-list
