On Mon, Feb 5, 2018 at 3:37 PM, Steven D'Aprano wrote:
> On Sun, Feb 04, 2018 at 09:18:25PM -0800, Guido van Rossum wrote:
>
> > The way I think of it generally is that immutability is a property of
> > types, while hashability is a property of values.
>
> That's a great way to look at it, thanks
Sorry -- too big a brain blip this morning.. my experiments were'n't
actually creating dataclasses properly.
Though it does show why the reliance on type hinting in troubling!!
IGNORE that message!
Sorry for the noise.
-CHB
On Mon, Feb 5, 2018 at 3:37 PM, Steven D'Aprano wrote:
> On Sun, Fe
I don't seem to be getting my own messages back to reply to, but:
yes, of course, dataclasses won't hash if a field is mutable:
In [*58*]: @dataclasses.dataclass(hash=*True*, frozen=*True*)
...: *class* *Hash*:
...: x: int = 5
...: l: list = dataclasses.field(default_fact
On Mon, Feb 5, 2018 at 5:17 PM, Steven D'Aprano wrote:
> I'm not happy about the concept of pandering to the least capable, most
> ignorant programmers by baking a miscomprehension into an important
> standard library API.
I don't think this is "baking a miscomprehension", but rather adhering t
