4

Reflection and Interfaces

Do you remember the phone book application from the previous chapter? You might wonder what happens if you want to sort user-defined data structures, such as phone book records, based on your own criteria, such as a surname or first name. What happens when you want to sort different datasets that share some common behavior without having to implement sorting from scratch for each one of the different data types using multiple functions? Now imagine that you have a utility like the phone book application that can process two different formats of CSV data files based on the given input file. Each kind of CSV record is stored in a different Go structure, which means that each kind of CSV record might be sorted differently. ...

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