Book Image

Getting Started with V Programming

By : Navule Pavan Kumar Rao
4 (1)
Book Image

Getting Started with V Programming

4 (1)
By: Navule 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)
1
Section 1: Introduction to the V Programming Language
4
Section 2: Basics of V Programming
12
Section 3: Advanced Concepts in V Programming

Implementing an endpoint to update a note using HTTP verb PUT

To update Note, we will implement the endpoint that meets specific requirements. Let's make a list of these requirements for our update endpoint to gain an understanding of what the request and response should look like.

The request is expected to meet the following criteria:

  • The HTTP method will be PUT.
  • The HTTP route will be /notes/:id.
  • The request body will have a payload representing a Note in JSON format.

The response is expected to meet the following criteria:

  • When a malformed JSON is present in the request payload, the following will occur:
    • The response body will have a CustomResponse struct encoded into JSON with a reasonable message.
    • The status code will show 400, Bad Request.
  • If the proper JSON payload of the Note is present in the request body, do the following:
    • Check whether the Note to be updated exists in the database using the built-in orm-based syntax.
  • When a Note...