If you're looking to build production-ready AI applications that can reason and retrieve external data for context-awareness, you'll need to master--;a popular development framework and platform for building, running, and managing agentic applications. LangChain is used by several leading companies, including Zapier, Replit, Databricks, and many more. This guide is an indispensable resource for developers who understand Python or JavaScript but are beginners eager to harness the power of AI.

Authors Mayo Oshin and Nuno Campos demystify the use of LangChain through practical insights and in-depth tutorials. Starting with basic concepts, this book shows you step-by-step how to build a production-ready AI agent that uses your data.Harness the power of retrieval-augmented generation (RAG) to enhance the accuracy of LLMs using external up-to-date dataDevelop and deploy AI applications that interact intelligently and contextually with usersMake use of the powerful agent architecture with LangGraphIntegrate and manage third-party APIs and tools to extend the functionality of your AI applicationsMonitor, test, and evaluate your AI applications to improve performanceUnderstand the foundations of LLM app development and how they can be used with LangChain

一般传统英语词典主要以释义为目的，指导学习者如何理解词语的意思。本词典则主要指导学习者如何有效地运用词语，有别于传统英语词典。它通过关键词把表达相同思想、概念或属于同一语义范围的单词和词组编排在一起，帮助学习者增加词汇知识，更有效地运用英语表达思想。

Swift is a new programming language for creating iOS and OS X apps. Swift builds on the best of C and Objective-C, without the constraints of C compatibility. Swift adopts safe programming patterns and adds modern features to make programming easier, more flexible, and more fun. Swift’s clean slate, backed by the mature and much-loved Cocoa and Cocoa Touch frameworks, is an opportunity to reimagine how software development works.
This book provides:
- A tour of the language.
- A detailed guide delving into each language feature.
- A formal reference for the language.

The essential guide to twentieth-century literature around the world
For six decades the Penguin Modern Classics series has been an era-defining, ever-evolving series of books, encompassing works by modernist pioneers, avant-garde iconoclasts, radical visionaries and timeless storytellers.
This reader's companion showcases every title published in the series so far, with more than 1,800 books and 600 authors, from Achebe and Adonis to Zamyatin and Zweig.
It is the essential guide to twentieth-century literature around the world, and the companion volume to The Penguin Classics Book.
Bursting with lively descriptions, surprising reading lists, key literary movements and over two thousand cover images, The Penguin Modern Classics Book is an invitation to dive in and explore the greatest literature of the last hundred years.

The era of ASCII characters on green screens is long gone. Today, industry leaders such as Apple, HP, IBM, Microsoft, and Oracle have adopted the Unicode Worldwide Character Standard, and acceptance among developers is rapidly increasing. Yet much software and many web sites still use a host of standards, including PostScript, TrueType, TeX/Omega, SVG, Fontlab, FontForge, Metafont, Panose, and OpenType. This new reference book is a comprehensive guide to using fonts and typography on the Web and across a variety of operating systems and application software. "Fonts & Encodings" shows you how to take full advantage of the incredible number of typographic options available. Advanced material covers everything from designing glyphs to developing software that creates and processes fonts. This book explains information on fonts and typography that software and web developers need to know to get typography and fonts to work properly.

《超值白金版•蓝宝书大全集:新日本语能力考试N1-N5文法详解》以改革后的新日本语能力考试为基准，包含了各个级别必须掌握的最核心、最实用的文法句型，并且各级别中无重复的文法条目。全书共740个核心文法条目，讲解的文法句型总共达1000个左右。
《超值白金版•蓝宝书大全集:新日本语能力考试N1-N5文法详解》每个文法知识点包括基本意思、常用用法的讲解和真题中考过的关于该知识点的原题。并且通过（注意）的形式，总结每个文法点在使用时的注意事项、常见搭配、惯用表达等。
海报：

这部辞典收录了日本《中·高级日语教科书句型索引》和日语能力考试1、2级考题标准中的所有句型，并加入了从报刊、杂志、电影剧本等收集到的各类句型共3000条；采用“50音序索引”、“末尾音逆序索引”、“意义、功能项目索引”三种索引。

Chris Patten was a cradle Catholic (hence the title), became one of the most prominent Tory 'Wets' of the 1980s and 1990s, and went on to hold a series of prominent public offices - Chairman of the Conservative Party, the last Governor of Hong Kong, European Commissioner for External Affairs, Chancellor of Oxford University, Chairman of the BBC, advisor to the Pope - as he self-deprecatingly puts it 'a Grand Poo-bah, the Lord High Everything Else'. He writes with wry humor about his time in all these offices, taking us behind the scenes and showing us unexpected sides of many of the great figures of the day. In exploring his own identity he also examines the dangers of identity politics, which he encountered in several of his jobs, from Northern Ireland to Asia and the Middle East. No politician now writing is so purely enjoyable as Chris Patten

《牛津英语同义词学习词典》以最常见的词立条，词目下面把本条要讨论的同义词用黑体醒目地罗列出来，接着用一句话简单说明这几个词共同的含义是什么。这样的编排可以起到一个小目录的作用，让读者一看便知本条要讨论哪些词语。另一方面，这也方便水平较高的读者查阅，因为他们掌握的词汇量大，只是有些词一时想不起来，提醒一下就够了。