Hi,
logging is a side-effect and I try to keep it out of the functional parts
of my code.
But even for the parts where I want to introduce logging I find that it
renders code less readable.
As an example, say you've got an 'if-let' somewhere
(if-let [a (do-something-non-trivial-with-some-local-args)]
(make-use-of-a)
(return-a-reasonable-default))
That piece of code is concise, readable, nicely indented, etc. However,
when logging comes along, it becomes ugly quickly, at least to my eye:
(if-let [a (do-something-non-trivial-with-some-local-args)]
(do (log/debug "got a reasonable a:" a)
(make-use-of-a))
(do (log/warn "using a dangerous default")
(return-a-reasonable-default)))
I wonder, how you deal with such situations. Do you get rid of all those
do's, e.g. with a 'logged' ('debugged', 'warned', etc) macro which takes
some logging args and a body in any way? Do you wrap functions in
tracing-like logging entities and log e.g. at the level of '
do-something-non-trivial-with-some-local-args'? Or are you just happy with
the 'do'?
The only other thread I could find on this list which discussed related
issues was https://groups.google.com/d/msg/clojure/B2Wo5Oe1OrI/Y_eznCx3R7YJ
and I will think a bit about Herwig's reader tag approach.
Regards,
stefan
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