I'm extremely internally torn regarding kwargs. I use them a lot; I know
they hinder composability; but every time I go back to straight maps for
these kinds of things I really don't like all the extra noise characters
and go back to kwargs.
I feel like I really should be using regular maps for all the good reasons
listed, but in practice I don't. Honestly, I don't usually run into the
composability issues too often, so I'm getting by "ok" with my indulgence
in kwargs, I suppose.
I especially dislike that my non-kwarg fns no-longer can elegantly accept
no options. Let me illustrate:
(defn foo [& {:keys [a b]}]
[a b])
(foo :a 1 :b 2)
(foo)
(defn foo [{:keys [a b]}]
[a b])
(foo {:a 1 :b 1})
(foo {}) ;; <-- unpleasant to my eyes, let me reimplement foo
(defn foo
"This is also pretty gross"
([]
(foo {}))
([{:keys [a b]}]
[a b]))
So, yeah, I'm pretty torn.
I like the option of having kwargs for the outer API shell, and explicit
option maps internally. I've played with that a little as well at work to
some "ok" success.
Alex
On Tue, Apr 29, 2014 at 8:41 PM, James Reeves <ja...@booleanknot.com> wrote:
> On 30 April 2014 03:54, Sean Corfield <s...@corfield.org> wrote:
>
>> I still think the keyword argument approach is far more readable to
>> _users_
>
>
> Really? It's only an omission of two braces. While readability is
> subjective, I'm not sure how that can be considered to be *far* more
> readable.
>
> From a purely practical perspective, explicit maps are generally a lot
> easier to work with. To my mind the disadvantages of keyword arguments
> often outweigh the small presentational benefits they have.
>
> - James
>
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