I just "discovered" the "#=" reader macro from a post on Stackoverflow
and it solves a problem. How likely is this reader macro to become an
official (documented) part of the language? How about deprecated or
changed behavior?
I am trying to use Stuart Sierra's "do-template" inside a
"defprotocol" to declare multiple similar methods:
(defprotocol AProtocol
(a-method [this])
#=(do-template [name]
`(~(symbol (str name "-method")) [`~this `~that])
foo bar baz))
should expand to
(defprotocol AProtocol
(a-method [this])
(foo-method [this that])
(bar-method [this that])
(baz-method [this that]))
When I tried the "do-template" without the "#=" macro, the compiler
complained that I was redefining "do-template", so I need the "do-
template" expanded *before* the "defprotocol". Is there any other way?
Is the "do-template" correct to expand to what I need? I tried testing
it with "macroexpand" and "macroexpand-1", but got:
(do (clojure.core/seq (clojure.core/concat (clojure.core/list (symbol
(str foo "-method"))) (clojure.core/list (clojure.core/apply
clojure.core/vector (clojure.core/seq (clojure.core/concat
(clojure.core/list (quote user/this)) (clojure.core/list (quote user/
that)))))))) (clojure.core/seq (clojure.core/concat (clojure.core/list
(symbol (str bar "-method"))) (clojure.core/list (clojure.core/apply
clojure.core/vector (clojure.core/seq (clojure.core/concat
(clojure.core/list (quote user/this)) (clojure.core/list (quote user/
that)))))))) (clojure.core/seq (clojure.core/concat (clojure.core/list
(symbol (str baz "-method"))) (clojure.core/list (clojure.core/apply
clojure.core/vector (clojure.core/seq (clojure.core/concat
(clojure.core/list (quote user/this)) (clojure.core/list (quote user/
that)))))))))
Nice! :-).
Are my anaphora (`~this `~that) correct?
Thanks.
BTW, I am writing my first large (several KLOC) Clojure program using
Swing -- I need to set similar actionListeners on several JButtons
(mondayButton, tuesdayButton, etc.) and thought that "do-template"
would be the perfect tool.
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