I'm trying to use << from clojure.contrib.strint perform string
interpolation in a string variable. The following,
(ns strint-test (:use clojure.contrib.strint))
(def v 1)
(println (<< "v: ~{v}"))
(def s "v: ~{v}")
(println (<< (str s)))
(println (<< s))
results in
v: 1
v: ~{v}
java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.IllegalArgumentException: No matching method found: indexOf
for class clojure.lang.Symbol (strint-test.clj:8)
Does anybody have any advice on getting (<< s) to work? I have
included the << macro and associated function from
clojure.contrib.strint for reference. Thanks.
(defmacro <<
[string]
`(str ~@(interpolate string)))
(defn- interpolate
"Yields a seq of Strings and read forms."
([s atom?]
(lazy-seq
(if-let [[form rest] (silent-read (subs s (if atom? 2 1)))]
(cons form (interpolate (if atom? (subs rest 1) rest)))
(cons (subs s 0 2) (interpolate (subs s 2))))))
([^String s]
(if-let [start (->> ["~{" "~("]
(map #(.indexOf s %))
(remove #(== -1 %))
sort
first)]
(lazy-seq (cons
(subs s 0 start)
(interpolate (subs s start) (= \{ (.charAt s (inc
start))))))
[s])))
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