Programming Crystal

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Programming Crystal

Author: Ivo Balbaert
language: en
Publisher: The Pragmatic Programmers LLC
Release Date: 2019-01-30
Crystal is for Ruby programmers who want more performance, or for developers who enjoy working in a high-level scripting environment. Crystal combines native execution speed and concurrency with Ruby-like syntax, so you will feel right at home. This book, the first available on Crystal, shows you how to write applications that have the beauty and elegance of a modern language, combined with the power of types and modern concurrency tooling. Now you can write beautiful code that runs faster, scales better, and is a breeze to deploy. Crystal is elegant to read and easy to program like Ruby, allowing full object-oriented development. Its compiler is powerful enough to nearly always infer the type of your variables. So you get the benefits of a statically typed language: more robust code, safety and execution speed, while still reaching high productivity in development. Null pointer exceptions as in JavaScript, Java or C#, are a thing of the past: Crystal annihilates them, just like Rust. Explore the building blocks and design of the language, and how you can use the Crystal tool-chain to build and manage powerful applications. Harness the power of the macro system, as well as how to work with fibers and channels, making concurrency as easy as possible. Learn how to use the Kemal web framework and access databases, and how to tap the potential of existing Crystal libraries. Find the spot that Crystal fills in today's software world with real-world examples. With Crystal, you can combine the best of both worlds: the high-level coding of dynamic languages, and the safety and blazing performance of a natively compiled language. What You Need: To develop in Crystal, you only need Crystal v 0.26 the latest version, a common text editor and a browser.
Crystal Basics

Author: Nicholas Pearson
language: en
Publisher: Simon and Schuster
Release Date: 2020-02-11
A full-color practical handbook of essential techniques with an in-depth directory of healing stones • 2023 Coalition of Visionary Resources Silver Award • Offers guidance on selecting your crystals and gemstones and step-by-step instructions on how to cleanse, charge, activate, and program them • Includes templates for crystal grids and healing layouts, recipes for crystal elixirs, and directions for crystal meditations and energy clearing with crystals • The full-color directory includes 200 different rocks, minerals, gemstones, and crystal formations, organized alphabetically and featuring the physical, psychological, and spiritual healing qualities for every stone In this in-depth yet easy-to-follow guide, crystal healing teacher Nicholas Pearson offers a full-color compendium of 200 crystals and gemstones as well as a hands-on practical handbook on crystal healing, perfect for those just beginning their crystal journey as well as long-time stone lovers seeking an all-in-one reference. The handbook of crystal use opens with a thorough explanation of crystal energy, including its interactions with the human energy field, and teaches readers how to extrapolate what a crystal does based on its composition, crystal structure, formation process, and other properties. In the chapters on techniques, Pearson offers guidance on selecting your crystals and gemstones, then step-by-step instructions on how to cleanse, charge, activate, and program them. He explains how to make crystal grids and healing layouts, including templates for both, and also discusses the numerology and geometry of crystal grids. He explores the essentials of crystal elixirs, complete with elixir recipes, and details how to perform crystal meditations, clear the energy centers and the aura, and practice more advanced techniques, such as engaging with the crystal devas, creating sacred space, and practices for spiritual hygiene and protection. The compendium includes 200 rocks, minerals, gemstones, and crystal formations, organized alphabetically and featuring full-color photographs. Each entry includes geological information and the physical, psychological, and spiritual healing qualities for every stone. Some stones, such as jasper and quartz, have multiple varieties, each given their own entries to provide a thorough reference guide for crystal healers and collectors. This accessible yet comprehensive guide offers the essentials of crystal energy healing paired with a highly illustrated stone directory to give you everything you need to know about crystal basics in one handy volume.
The Illustrated Guide to Crystals

Author: Judy Hall
language: en
Publisher: Sterling Publishing Company, Inc.
Release Date: 2000
In this lavishly illustrated guide is all the information needed to choose, cleanse, and program crystals. Along with a colorful directory and explanations of the different types, see how to use your special stone to find a soul mate and improve relationships. Restore the body with crystal medicine and chakra healing, relieve stress, turn stones into talismans and amulets, perform crystal divination, and more.