Generics

• generics
• make functions/structs able to work with more than one type, reducing duplication

• constrained function/structs to only work with one type at a time (can't mix apples and oranges)

• generics vs interface{} : similarities

• both can be used to define types that accept many types

• for example define a function that can work with both string and ints

• interface{}

• Less safe (mix apples and oranges), requires more error handling
• Less expressive, interface{} tells you nothing about the data
• More likely to rely on reflection, type-assertions etc which makes your code more difficult to work with and more error prone as it pushes checks from compile-time to runtime