Hi all,
I'm working on an API at the moment, and I'm balancing whether to use
inline keyword args which I would destructure in the functions, or whether
to just pass an explicit params map as the last parameter. Comparison of
the two options in case I'm not explaining myself well:
Kwargs:
(class/create-class :instance list
:description "My description"
:implements (keys class-methods)
:methods (calculate-my-methods))
Map:
(class/create-class {:instance list
:description "My description"
:implements (keys class-methods)
:methods (calculate-my-methods)})
A lot of APIs I've seen have favoured kwargs, and it undeniably makes for
some pretty code - Seesaw is the best example I've seen here, the API is a
thing of beauty. However it seems to me to have some issues:
1. If I want to delegate to another call from within an API function and
use the same arguments, it's really awkward: (apply delegate (mapcat
identity args)) or some similarly awful black juxt magic. Or of course
writing out all the parameters again, but that's even worse.
2. It's more difficult to make parameters optional based on some runtime
criteria since the params are baked into the function call. I guess this is
usually dealt with by making the calls handle nil for a particular
parameter.
Both of these are much easier when passing an explicit map. Any preferences
here, from either writing or using APIs like this?
Cheers,
Colin
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