The value of the current letter, written in the (a | a) format.
用(a | a)格式写的当前字母的值。
If the index of the current letter is less than the length of the string, you invoke your named template again, passing the original string and incrementing the index by 1.
如果当前字母的下标小于字符串的长度,则再次调用已命名的模板,传递原始字符串并把下标加1。
The difference between Ireland and Iceland, so the current joke goes, is one letter and six months.
现在有这样一个笑话:爱尔兰(Ireland)和冰岛(Iceland)有什么区别?一个字母和六个月。
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