掌握Elm构建2018年Web应用：从入门到实践

需积分: 10 190 浏览量更新于2024-07-18 收藏 3.09MB PDF 举报

"《Web Applications with Elm -- 2018》是一本专著，旨在引导读者学习如何使用Elm编程语言和其开发环境来构建Web应用程序，特别强调了函数式编程在Web开发中的应用。作者是Wolfgang Loder，该书由Allitebooks出版，提供了电子版（ISBN-13: 978-1-4842-2610-0）和纸质版（ISBN-13: 978-1-4842-2609-4）供读者选择。书中内容覆盖了从基础到进阶的学习路径，包括如何通过实际例子掌握Elm语言和相关库的使用。Elm架构作为核心教学内容，它提供了一种结构化的开发模式，帮助开发者构建高效、可靠且易于维护的Web应用。读者将学会如何利用Elm平台创建功能完备的应用，并深入理解其实现细节。本书的特色在于结合理论与实践，让读者不仅能够学习语言本身，还能掌握如何将其应用于实际项目中，从而提升Web开发技能。此外，书中还遵循版权法规定，所有内容受到保护，未经许可不得复制、传播或以任何形式进行修改。商标名、标志和图像在书中仅作为示例使用，并非授权商业用途。通过阅读这本书，读者可以期待获得对函数式编程在Web开发中的深入理解和实践经验，这对于希望在现代Web开发领域中采用新兴技术的开发者来说是一本不可多得的参考资料。无论是初学者还是有一定经验的开发者，都能从中受益匪浅，进一步提升自己的Web应用程序开发能力。"

Figure 1-4. Example Elm logo

This app makes heavy use of interfacing with JavaScript, which is not always

necessary, but on the other side it is good to know it can be done.

What remains to be seen in the future is whether complicated applications can be

done with Elm as well. My own experience shows that one runs against a wall from time

to time or has to implement wrapper code in JavaScript. It is possible to move from SPAs

to multi-page applications, though.

Graphics

The Elm platform provides powerful graphics libraries. One example of their capabilities

is the Mario game. Another example is the Elm logo pictured in Figure1-4.

CHAPTER 1 INTRODUCTION

Embedded

Developers who want to introduce Elm may have difficulty getting approval from project

managers. One way, as described on the Elm website, is to start by embedding small

applications in existing websites.

Elm code can be compiled into JavaScript files, which can then be imported to an

HTML page with the usual script tags. There is no issue with either embedding several

compiled Elm files or using one file several times on a page. The only downside is that

the Elm runtime will be embedded several times. It is not too big, but it would still be a

waste of bandwidth.

Also, the embedded Elm applications have to be self-contained regarding state.

Communication between them is only possible via JavaScript code and by interfacing

with that code. Obviously, we may run into the concurrency problems that Elm tries

to solve in the first place when we have to update the state of those embedded Elm

applications.

What Can’t WeDo withElm?

After all the positive examples in the preceding paragraphs, we should now discuss what

we can’t do with Elm. Again, I must provide the disclaimer that I am writing this book

with version 0.18in mind.

It is not completely true to say that there are requirements we can’t implement with

Elm, because we can do everything by interfacing with external JavaScript code on a

website. Doing implementations this way is probably not in the spirit of Elm, and it also

defies some of the strong points of Elm, like type safety and a compiler that makes sure

certain functions are implemented before running the application.

By interfacing with external JavaScript we lose certain advantages. The result may

be to reimplement features inside the Elm platform. Whether or not this makes sense

is another question. Styling may be easier, but using a framework with enhanced

component features forces the developer to write interface wrappers with their own

models that can then be transferred into the Elm application.

Another problem with Elm is that it does not have any lifecycle hooks. Elm is not

only a language, but also a runtime environment and more. A lifecycle hook into the Elm

runtime would help to integrate it with third-party JavaScript libraries, but then we are

discussing the question of interfacing again.

CHAPTER 1 INTRODUCTION

剩余212页未读，继续阅读

白鸽-小蛋

粉丝: 10
资源: 166

掌握Elm构建2018年Web应用：从入门到实践

MySQL™ and JSP™ Web Applications: Data-Driven Programming Using Tomcat and MySQL

Building-Web-Applications-with-Flask-Use-Python-and-Flask-to-build-amazing-web-applications-just-the-way-you-want-them-. ....pdf

[电子书][高清] Building Web Applications with Flask - Italo Maia

Building-Web-Applications-with-C-and-NET

single-page-web-applications-with-angular-js

Nirali Dabhi, Dharmendra Patel, Atul Patel - Web Development Toolkit for Java Developers_ Build dynamic, secure, and scalable web applications with Java-BPB Publications (2023).pdf

Architecting-Modern-Web-Applications-with-ASP.NET-Core-and-Azure

Serverless-Web-Applications-with-React-and-Firebase:Packt发布的具有React和Firebase的无服务器Web应用程序

Develop-and-Deploy-Modern-Web-Applications-with-Docker-Video-:用Docker开发和部署现代Web应用程序[视频]，由Packt发布

Single Page Web Applications JavaScript end-to-end

最新资源