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Getting Started with V Programming

Getting Started with V Programming

By : Pavan Kumar Rao
4.4 (16)
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Getting Started with V Programming

Getting Started with V Programming

4.4 (16)
By: Pavan Kumar Rao

Overview of this book

A new language on the block, V comes with a promising set of features such as fast compilation and interoperability with other programming languages. This is the first book on the V programming language, packed with concise information and a walkthrough of all the features you need to know to get started with the language. The book begins by covering the fundamentals to help you learn about the basic features of V and the suite of built-in libraries available within the V ecosystem. You'll become familiar with primitive data types, declaring variables, arrays, and maps. In addition to basic programming, you'll develop a solid understanding of the building blocks of programming, including functions, structs, and modules in the V programming language. As you advance through the chapters, you'll learn how to implement concurrency in V Programming, and finally learn how to write test cases for functions. This book takes you through an end-to-end project that will guide you to build fast and maintainable RESTful microservices by leveraging the power of V and its built-in libraries. By the end of this V programming book, you'll be well-versed with the V programming language and be able to start writing your own programs and applications.
Table of Contents (19 chapters)
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1
Section 1: Introduction to the V Programming Language
4
Section 2: Basics of V Programming
12
Section 3: Advanced Concepts in V Programming

The rune data type

Before we study working with runes in V, we will see why you might need to use the rune type. In UTF-16 encoding, code points lower than 216 are encoded using a 16-bit code unit, which is equal to the numerical value of code point. The newer code points greater than or equal to 216 are encoded by compound values of two 16-bit code units. For example, the Cyrillic lowercase á is a combination of U+0430 and U+0301. Such values are not used as characters in UTF-16 and there is no way to code them as individual code points. To overcome this limitation, we have the rune type in V. Using the rune type, we can represent compound code points as a single integer value that can range between 0 and 4294967295, as specified in Table 4.3 for u32. So, with rune, it can be any u32 value, including surrogate code points and values that are not legal in Unicode code points.

Briefly put, character literals have a specific data type called a rune. A rune represents a Unicode...

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