[alerighi]

> The UNIX philosophy is also build on the idea of small programs, just like micro-libraries, of doing one thing and one thing well, and composing those things to make larger things.

They have small programs, but that are not of different project. For example all the basic Linux utilities are developed and distributed as part of the GNU coreutils package.

It's the same of having a modular library, with multiple functions in them, that you can choose from. In fact the problem is that these function like isNumber shouldn't even be libraries, but should be in the language standard library itself.