You can declare multiple configuration values in the attribute by separating them with a pipe | character.

你可以在属性中声明多个配置的值，通过“|”符号将它们分隔开。

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Having data sets with a non-white space character separating the data points is a very common occurrence.

最常见的就是数据集合不使用空格字符分隔数据点。

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The split method then returns an array holding the strings that resulted from separating the given string into substrings, as delimited by the space character.

然后，split方法返回一个数组，其中保存了根据空格字符将给定字符串分割成子字符串的结果。

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