使用方法: (repeat s n)
型ヒント: String s
sをn個くっつけた文字列を返す。
1 user=> (use '[clojure.contrib.str-utils2 :only (repeat)])
2 WARNING: repeat already refers to: #'clojure.core/repeat in namespace: user, being replaced by: #'clojure.contrib.str-utils2/repeat
3 nil
4 user=> (repeat "abc" 3)
5 "abcabcabc"