Ch04.md

Chapter 4 Examples

Examples from Chapter 4 (Generics) of Programming C# 12.0 (O'Reilly).

Generic Types

• Example 1. Defining a generic class
• Example 2. Defining a generic record
• Example 3. Using a generic class
• Example 4. Constructed generic types as type arguments

Constraints

• Example 5. Creating a new instance of a parameterized type
• Example 6. Using a type constraint
• Example 7. Will not compile: interface not implemented
• Example 8. Will not compile: missing constraint
• Example 9. Constraining one argument to derive from another
• Example 10. Constraint requiring a reference type
• Example 11. Constrained by another constraint
• Example 12. Constraint requiring a value type
• Example 13. Constraints requiring delegate and enum types
• Example 14. Multiple constraints

Zero-Like Values

• Example 15. Getting the default (zero-like) value of a type argument
• Example 16. Getting the default (zero-like) value of an inferred type

Generic Methods

• Example 17. A generic method
• Example 18. Invoking a generic method
• Example 19. A generic method with a constraint
• Example 20. Generic method type argument inference

Generic Math

• Example 21. A template technique that doesn’t work in C# generics
• Example 22. Using generic math
• Example 23. Why operator constraint interfaces need to be generic
• Example 24. The IAdditionOperators<TSelf, TOther, TResult> interface
• Example 25. Using INumberBase<T>.Zero
• Example 26. Using AdditiveIdentity
• Example 26. Using AdditiveIdentity

Generics and Tuples

• Example 27. Declaring a tuple variable in the normal way
• Example 28. Declaring a tuple variable with its underlying type
• Example 29. Returning a tuple