String-Length index的意思|示意

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 key to using the method for validation is to compare the updated index to the length of the original input string.

使用该方法验证的关键在于将更新过的索引和初始输入字符串的长度进行比较。

Some of the typical string-related checks would validate whether an empty string has 0 length, accessing out-of-index results in an error message or exception, and so on.

与字符串相关的一些典型的检查，会验证空字符串的长度是否为 0，访问范围超出索引是否导致错误消息或异常，等等。

If the index of the current letter is equal to the length of the string, this variable is an empty string.

如果当前字母的下标和字符串的长度相等，那么这个变量是一个空字符串。

In addition to comparing the length and index values for equality, you must also check for either a null Number after parsing or an empty input string (" "or length of zero).

除了要比较长度和索引值是否相等之外，还必须检查是解析后的null Number还是一个空的输入字符串(或长度为0)。

I have 2 lists: a string list and a double list with same length and with same index of correspondence.

我有2列出了：一个字符串列表和一个双与长度相同和相同索引的信件。