Jeb Beich jebberjeb
jebberjeb
/ wrap-java.clj
Last active
December 20, 2015 22:49
Wrap a java method call for easy use w/ map, filter, etc using a macro. memfn obviates this mess.
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| (defmacro ->j-fn [j-fn] | |
| (let [args (gensym "args")] | |
| `(fn [~args] | |
| (eval (cons '~j-fn (if (coll? ~args) ~args (list ~args))))))) | |
| ;trivial | |
| ((->j-fn .length) "foo") | |
| ;useful, since you can't do (map .length ["foo" "bar"]) | |
| (map (->j-fn .length) ["foo" "bar"]) |
jebberjeb
/ foozle.clj
Last active
December 19, 2015 12:29
This is that example from yesterday's TDD that was tripping me up. Looks easy here -- think I just need to do more apply (partial map foo) coll of colls.
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| (def ->num {[" " | |
| " |" | |
| " |" | |
| " "] 1 | |
| [" _ " | |
| " _|" | |
| "|_ " | |
| " "] 2 | |
| [" _ " | |
| " _|" |
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