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Mastering Swift 4 - Fourth Edition by Jon Hoffman

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Custom types

Custom types should have a descriptive name that describes what the type is for. The name should be in PascalCase. Here are examples of proper names and non-proper names based on our style guide:

// Proper Naming Convention BaseballTeam 
LaptopComputer 
 
//Non-Proper Naming Convention 
baseballTeam  //Starts with a lowercase letter Laptop_Computer //Uses an underscore 

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