获取对象的字符偏移量。
这基本上是一个嵌套结构，它只是给出了每个产品在源文本中匹配的字符偏移量。
Basically, this is a nested structure that simply gives the character offsets where every production was matched in the source text.
这些参数指向了一个字符串表中的偏移量。
一些函数的输入是数值，比如字符串函数的起始、长度和偏移量参数。
For some functions, a numeric value is input, for example start, length, and offset parameters of string functions.
字符串中的偏移量：LOCATE函数的第二个参数，指定了字符串中开始搜索的起始位置。
Offset within a string: The second argument of the LOCATE function, which specifies the starting position within a string to begin the search.
当String构造器运行时，字符串长度和偏移量被设置成所需要的值。
When the String constructor runs, the length and offset are then set to their desired values.
现在我们处理的不是C语言和它的数组，我们想用字符串偏移量，所以我们需要一个哈希函数，为每个键值计算出一个数值。
Now we're not dealing with C and C arrays but also want to use string offsets so we need a function to calculate a numeric value, a hash, for each key.
偏移量包含非法字符。请输入有效偏移量。
偏移量包含非法字符。
如果设定本标记，对每个出现的匹配结果也同时返回其附属的字符串偏移量。
If this flag is set for every occurring match the appendant string offset will also be returned.
无符号长整型数，它给出输入字符串的IL偏移量，或在没有IL偏移量或字符串格式不良时给出零。
Offset Unsigned long integer giving the IL offset from the input string, or zero if there was no IL offset or the string was not well formed.
和substr差不错，不过就是在计算偏移量的时候，有差异，substr是以字符为单位。
SUBSTR calculates lengths using characters as defined by the input character set.
获取给定字符串中数据的偏移量(以字节为单位)。
获取给定字符串中数据的偏移量(以字节为单位)。
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