What are the rich operations and rich class lists in Scala

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You can call far more methods on the Scala primitive type than you have mentioned in the previous paragraphs. Several examples are listed in Table 5.4. These methods are used through implicit conversion: implicit conversion. All you need to know now is that for each of the basic types described in this chapter, there is a "rich wrapper" that provides many additional methods. So, to see all the methods available for the base type, you should also take a look at the API document for each basic type of rich wrapper.

Table 5.4 some rich operations

Form 5.5 Rich Packaging Class

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