C++ POOL — DAY 15

Writing code that works with any type, without sacrificing anything.

C++'s answer to the problem met on day 2: how do you write a data structure or a computation method accepting any kind of content, without the language giving up on checking that you are not making a mistake? The solution is called templates, literally code models: you write the logic once, and the compiler automatically produces a version tailored to each type actually used.

Template functions and classes, specialisation, and generic containers, delivered entirely as headers.