1.3. Ruby extensions and programming libraries
The first major point to take on board as you read this section is that it isn’t a Ruby standard library reference. As explained in the introduction, this book doesn’t aim to document the Ruby language; it aims to teach you the language and to confer Ruby citizenship upon you so that you can keep widening your horizons.
The purpose of this section, accordingly, is to show you how extensions work: how you get Ruby to run its extensions, the difference among techniques for doing so, and the extension architecture that lets you write your own extensions and libraries.
The extensions that ship with Ruby are usually referred to collectively as the standard library. The standard library includes extensions ...
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