Modern CPUs can run in two modes: kernel mode and user mode. When a CPU runs in kernel mode, an extended set of instructions is allowed, as is free access to anywhere in memory and device registers.

Separating interface from implementation has many practical benefits. Here’s a simple way to do just that, in ANSI-standard C code. How do you organize medium-sized or larger C programs? Few C ...

The module system introduced in Java 9 makes it easier to organize your code. Here’s a brief guide to working with modules in Java Until Java 9, Java’s top-level code organization element had been the ...