我正在使用 Ruby on Rails v3.0.9,我想将一个字符串数组转换为包含标点符号的句子。也就是说,如果我有以下数组:
["element 1", "element 2", "element 3"]
我想获取/构建:
# Note: I added 'Elements are: ' at the begin, ',' between elements and '.' at
# the end.
"Elements are: element 1, element 2, element 3."
我该如何做到这一点?