The ultimate guide to Crystal programming covering all its fundamental concepts such as OOP and concurrent programming to help you write readable and safe code

Crystal is for Ruby programmers who want more performance, or for developers who enjoy working in a high-level scripting environment. Crystal combines native ex

A full-color practical handbook of essential techniques with an in-depth directory of healing stones • Offers guidance on selecting your crystals and gemstone

In this lavishly illustrated guide is all the information needed to choose, cleanse, and program crystals. Along with a colorful directory and explanations of t

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