It would have been nice if the page explained that "SBC" means Single Board Computers.

Currently available for cheap (and DRM-free) from Humble Bundle: https://www.humblebundle.com/books/game-architecture-worldbu...

If you're a student in higher education then it's a free download via Lean Library (if your education establishment is a subscriber to the service).

thanks so much for linking this!

Only the abstractions are zero cost

What is often meant by that is "This is a zero run-time cost abstraction". That's a very different thing from a zero cost abstraction.

Even if the abstraction actually has a zero run-time cost, which is absolutely not a give, it still has a compile-time cost and a human-time cost.

See for example: https://www.youtube.com/watch?v=rHIkrotSwcc

There's no such thing as a free abstraction lunch.

You can find most books for free on the internet :) Please do support the authors though.