ruby->clojure.contrib.str-utils

　rubyでやってみると、こんな感じ＞＜

re-split

　文字列のパターンによる分割

"a, b, c, d, e, f, ".split ' ' #=>["a,", "b,", "c,", "d,", "e,", "f,"]
"a, b, c, d, e, f, ".split ',' #=>["a", " b", " c", " d", " e", " f", " "]

"1,2,3,4,5".split("," , 1)     #=>["1,2,3,4,5"]
"1,2,3,4,5".split("," , 2)     #=>["1", "2,3,4,5"]
"1,2,3,4,5".split("," , 5)     #=>["1", "2", "3", "4", "5"]
"1,2,3,4,5".split("," , 6)     #=>["1", "2", "3", "4", "5"]

re-partition

　文字列のパターンによる部分文字列への分離
instance method String#partition (Ruby 1.8.7)

"abc123def".partition /\d+/     #=>["abc", "123", "def"]
#"abc123def".split /\d+/        #=>["abc", "def"]
"abc123def".partition /[a-z]+/  #=>["", "abc", "123def"] #<=clojureと結果が違うｗ；

re-gsub,re-sub

　文字列のパターンによる（一部）交換

"rubyonrails".gsub(/r/,"R") #=>"RubyonRails"
"rubyonrails".sub(/r/,"R")  #=>"Rubyonrails"

str-join

%w[Perl Python Ruby].join " , " #=>"Perl , Python , Ruby"

chop,chomp

"abc".chop    #=>"ab"
"abc\n".chop  #=>"abc"

"abc".chomp   #=>"abc"
"abc\n".chomp #=>"abc"

　String#partition以外は、だいたい似たような動作です。
str-utils作った人かなりのRuby好きだ（｀Д´）9m