[Python-ideas] Identity dicts and sets (original) (raw)

Mike Meyer mwm at mired.org
Wed Jan 2 21:37:12 CET 2013


On Wed, Jan 2, 2013 at 2:34 PM, Serhiy Storchaka <storchaka at gmail.com> wrote:

середа 02 січень 2013 21:43:47 Eli Bendersky ви написали:

I agree that the data structures may be useful, but is there no way to some allow the customization of existing data structures instead, without losing performance? It's a shame to have another kind of dict just for this purpose. What interface for the customization is possible? Obviously, a dict constructor can't have a special keyword argument.

How about a set_key method? It takes a single callable as an argument. You'd get your behavior with dict.set_key(id). If called when the dict is non-empty, it should throw an exception.

<mike



More information about the Python-ideas mailing list