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Clojure High Performance Programming - Second Edition
Clojure High Performance Programming - Second Edition
Shantanu Kumar
¥63.21
Become an expert at writing fast and high performant code in Clojure 1.7.0 About This Book Enhance code performance by using appropriate Clojure features Improve the efficiency of applications and plan their deployment A hands-on guide to designing Clojure programs to get the best performance Who This Book Is For This book is intended for intermediate Clojure developers who are looking to get a good grip on achieving optimum performance. Having a basic knowledge of Java would be helpful. What You Will Learn Identify performance issues in Clojure programs using different profiling tools Master techniques to achieve numerical performance in Clojure Use Criterium library to measure latency of Clojure expressions Exploit Java features in Clojure code to enhance performance Avoid reflection and boxing with type hints Understand Clojure's concurrency and state-management primitives in depth Measure and monitor performance, and understand optimization techniques In Detail Clojure treats code as data and has a macro system. It focuses on programming with immutable values and explicit progression-of-time constructs, which are intended to facilitate the development of more robust programs, particularly multithreaded ones. It is built with performance, pragmatism, and simplicity in mind. Like most general purpose languages, various Clojure features have different performance characteristics that one should know in order to write high performance code. This book shows you how to evaluate the performance implications of various Clojure abstractions, discover their underpinnings, and apply the right approach for optimum performance in real-world programs. It starts by helping you classify various use cases and the need for them with respect to performance and analysis of various performance aspects. You will also learn the performance vocabulary that experts use throughout the world and discover various Clojure data structures, abstractions, and their performance characteristics. Further, the book will guide you through enhancing performance by using Java interoperability and JVM-specific features from Clojure. It also highlights the importance of using the right concurrent data structure and Java concurrency abstractions. This book also sheds light on performance metrics for measuring, how to measure, and how to visualize and monitor the collected data. At the end of the book, you will learn to run a performance profiler, identify bottlenecks, tune performance, and refactor code to get a better performance. Style and approach An easy-to-follow guide full of real-world examples and self-sufficient code snippets that will help you get your hands dirty with high performance programming with Clojure.
Yii2 By Example
Yii2 By Example
Fabrizio Caldarelli
¥80.65
Develop complete web applications from scratch through practical examples and tips for beginners and more advanced users About This Book Improve your programming experience and become a full stack developer Master real-life web applications, and create and manage four different projects Step-by-step guidance to develop real-world web applications smoothly Who This Book Is For This book is for anyone who wants to discover and explore Yii Framework. Basic programming experience with PHP and object oriented programming is assumed. What You Will Learn Understand basic concepts, along with the installation and customization of Yii Discover models, controllers, and views—concepts applied in a web context—and how they are employed in Yii Use ActiveRecord to manipulate a database Add access control to your web application through authentication and authorization Install and customize an advanced template for multiple applications in the same project Create a RESTful Web Service to allow remote access to data Develop a console application to launch a command in the console as an automated task (cron job) Make code reusable through widgets and components and localize text messages to make a multilanguage web app In Detail Yii is a high-performance PHP framework best for developing Web 2.0 applications. It provides fast, secure, and professional features to create robust projects, however, this rapid development requires the ability to organize common tasks together to build a complete application. It's all too easy to get confused; this is where this book comes in. This book contains a series of practical project examples for developers starting from scratch. Each section contains the most relevant theories for every topic as you walk through developing each project, focusing on key aspects that commonly confuse users. The book starts with all the framework’s basic concepts, such as controllers and views, to introduce you to Yii and creating your first application, a simple news reader. You will be learn to configure URL rules to make a pretty URL, essential for search engine optimization. Next, you will walk through Model and ActiveRecord, key concepts in database interaction. The second application you will develop is a reservation system that allows you to manage rooms, customers, and reservations. For this, you will use database connection through SQL and ActiveRecord. More complex than the first one, this application will introduce you to the advanced template of Yii 2, splitting the app into two parts: a frontend for all visitors and a backend for the admin. Finally, you will move on to the last two applications: one that allows connections from remote clients, through RESTful components of Yii 2, and another that creates and organizes automatic tasks using the console application structure of Yii 2. Style and approach This is a step-by-step guide with each topic introduced in the context of real-world applications, highlighting common cases where users may encounter difficulties.
QlikView for Finance
QlikView for Finance
B. Diane Blackwood
¥63.21
Concoct dynamic business intelligence dashboards for financial analysis with QlikView About This Book Get accustomed to QlikView features for effective data analysis and visualization in Finance Employ the Memory data store, which refreshes data in real time, providing a faster response to business financial information A step-by step guide to using Qlikview features such as key performance indicators, interactive charts, and tables for financial analysis Who This Book Is For If you are a finance professional with basic knowledge of QlikView functions and wish to increase your knowledge of QlikView to apply it in the field of finance, then this book is for you. A good knowledge of financial aspects is an must-have. What You Will Learn Design Key Performance Indicators and extend your revenue ratio reporting Set up actions within a Text Object and create variables to make a chart toggle between visible and not visible Merge data from multiple sources to get more asset management options Examine good and bad practices in dashboard design and create a Group button to make more data available in less space Analyse the sales dashboard by adding tending lines and forecasting Create input boxes and use the input in formulas to perform “What If” analysis Examine the Key Performance Indicator (KPI) and Inventory Turnover, and investigate the usefulness of Pivot Create a QlikView analysis document and add data to it to gain deep insights In Detail This book is an effective step-by-step tutoring guide for financial analysis using Qlikview. It begins by teaching you the crucial concepts of Qlikview Finance to help you develop an effective understanding of financial data analysis and finance. The book then goes on to cover real-world, practical examples on the use of Qlikview for financial planning and analysis, expense management, risk management, and more. Moving on, topics such as Asset Management QlikView Dashboard and Retail Sales Analysis are covered in a strategic way. We then shift the focus to deal with the concepts of Inventory, Supply Chain, and Plant Coverage Dashboards. The book then reaches its conclusion by dealing with ways to share your QlikView insights. By the end of this book, you will have a good understanding of how to use Qlikview for numerous applications in finance. Style and approach This book is designed to explore what can be done in QlikView to facilitate Financial Analysis. It follows a step-by-step approach and each chapter has easy-to-follow, hands-on examples of important concepts.
Mastering Android NDK
Mastering Android NDK
Sergey Kosarevsky
¥90.46
Master the skills you need to develop portable, highly-functional Android applications using NDK About This Book Develop portable games using Android NDK and debug them on your desktop Familiarise yourself with different popular C++ libraries on Android and use them in your games Write multi-threaded code with graphics, sound, networking, and resource storage Who This Book Is For If you want to leverage your C++ skills in mobile development and increase the performance of your Android applications, then this is the book for you. Knowledge of C or C++ is assumed, including pointer manipulation, multi-threading, object-oriented programming concepts, and the basics of C++11. It would be an added advantage if you know how to develop applications without any IDE. What You Will Learn Explore popular C++ libraries and use them on Android Write portable, multithreaded native networking code Create portable audio framework using OpenAL Implement portable rendering framework using OpenGL ES 3 Debug mobile applications on your desktop machine Access resources from APK archives Render text with FreeType In Detail Android NDK is used for multimedia applications that require direct access to system resources. NDK is also the key for portability, which in turn allows a reasonably comfortable development and debugging process using familiar tools such as GCC and Clang toolchains. This is a hands-on guide to extending your game development skills with Android NDK. The book takes you through many clear, step-by-step example applications to help you further explore the features of Android NDK and some popular C++ libraries and boost your productivity by debugging the development process. Through the course of this book, you will learn how to write portable multi-threaded native code, use HTTP networking in C++, play audio files, use OpenGL ES 3, and render high-quality text. Each chapter aims to take you one step closer to building your application. By the end of this book, you will be able to create an engaging, complete gaming application. Style and approach This book adopts a step-by-step approach and each chapter is based on the material from the previous ones. The book focuses on putting to your knowledge of C++ use while you develop Android applications of your own.
香港世外桃源
香港世外桃源
黃梓莘
¥15.70
香港人缺的就是時間,盡管知道花一天時間郊遊,就會讓身心健康,但還是無法起行。用小半天時間吧,探賞一下交通便利的天然美景,讓我們不花時間地洗滌心靈。
香港美食大全
香港美食大全
施莉雅
¥33.52
書中食譜的選取原則是以簡便易做又美味可口為重,基本上在四五個步驟內即可完成。除幾十款西式糕餅甜點外,書中介紹的大多數均屬家中常吃的中菜和小食,每個食譜都列明食材、調味和製法,並按主要的烹製技法編排,讓你一目瞭然。
腕錶導賞手冊
腕錶導賞手冊
佘宗明
¥52.40
鑑賞的人,沒可能比一個製錶師更能了解一枚錶的機械結構,沒可能比品牌總裁更清楚製錶業的來龍去派,沒可能比零售商更洞悉市場狀況,沒可能比收藏家有更長時間去細味去感受一枚錶的長期表現。但他們有的是不偏不倚的觀點。關於技術、關於功能、關於品牌、關於購買。全方位資訊讓你從認識腕錶開始,終擁有自己的夢幻之錶。
糖尿病治療與中醫調養
糖尿病治療與中醫調養
徐大基
¥73.33
糖尿病不能根治,病徵亦不明顯,確診後可能數十年沒有病況,也有患者突然出現多種嚴重併發症,病情一發不可收拾,令人防不勝防。糖尿病的嚴重性更不在糖尿病本身,而在其多變的併發症上,例如高血壓、視網膜病變、心臟病、高脂血症等。要有效控制病情,減少或減輕併發症,保持生活質素,關鍵在於及時與合理的診治。本書作者為腎臟病的專家學者,現職於香港浸會大學中醫藥學院。他在書中詳述適切的中西藥療法,在飲食調理、挑選運動、心理調適等方面提供具體建議,強調中醫療法、健康管理與病情監測的重要意義,更解答患者常見的生活疑難,例如可不可以吃水果?多久應檢測血糖一次?運動前血糖低怎麼辦?
香港茶點
香港茶點
蔡潔儀
¥33.52
作者多年的教授經驗如材料份量、比例、溫度變化和氣候,以至造型等技巧,如草草了事,可能難以成型,破壞效果。在課堂上我也常常提醒學生們必須謹慎一點,才不會浪費了食材和自己的心機。此外,熟識和耐性也很重要,多學多做,屢敗屢戰,才能盡善盡美。外國諺語有說:“練習導致完美”。這是一本讀者容易學習的書籍,書中某些比較複雜的食譜會有連環圖片解畫,相對簡單的食譜作重點式提點製作竅門。值得一提,本書由材料開始至完成的每一環節,言簡意賅,都能使讀者清楚明白和掌握竅門。
天心月圓悟禪機:李叔同說佛(插圖本)
天心月圓悟禪機:李叔同說佛(插圖本)
李叔同
¥64.99
佛經裡問佛觀心 塵世中修身養性李叔同是近代極具傳奇色彩而又頗有爭議的人物。前半生,閱盡繁華,是濁世中的翩翩佳公子;後半世,超然塵外,是玄門中的潛心念佛人。本書從李叔同的著作、演講稿中,輯錄了他自述的生平經歷,關於佛學入門和日常修持的文章,以及對《華嚴經》、《無常經》、《地藏經》等佛教經典經文的專門論述。
43 The Punishment of a Vixen
43 The Punishment of a Vixen
Barbara Cartland
¥24.44
While staying at Lady Merrill’s French Riviera villa, flame haired and beautiful American heiress Nevada van Arden passes her time by casually breaking the hearts of her many ardent suitors – particularly that of young David, Lord Merrill. When his uncle, intrepid explorer and diplomat Tyrone Strome, overhears her cruel humiliation of his lovelorn nephew, he resolves to teach this ‘vixen’ a lesson – and save David from his misery. Tyrone Strome abducts Nevada, spiriting her away in his luxury yacht to Morocco. There the reluctant voyager, swaddled in native clothing, is terrified by the perils of the Sahara and its nomadic tribesmen. But, as they flee from certain death or worse, they find sanctuary in a beautiful hidden valley, a second Garden of Eden, where to Nevada’s surprise, love begins to blossom in the desert.
44 Secret of the Glen
44 Secret of the Glen
Barbara Cartland
¥24.44
While staying at Lady Merrill’s French Riviera villa, flame haired and beautiful American heiress Nevada van Arden passes her time by casually breaking the hearts of her many ardent suitors – particularly that of young David, Lord Merrill. When his uncle, intrepid explorer and diplomat Tyrone Strome, overhears her cruel humiliation of his lovelorn nephew, he resolves to teach this ‘vixen’ a lesson – and save David from his misery. Tyrone Strome abducts Nevada, spiriting her away in his luxury yacht to Morocco. There the reluctant voyager, swaddled in native clothing, is terrified by the perils of the Sahara and its nomadic tribesmen. But, as they flee from certain death or worse, they find sanctuary in a beautiful hidden valley, a second Garden of Eden, where to Nevada’s surprise, love begins to blossom in the desert.
46 For all Eternity
46 For all Eternity
Barbara Cartland
¥24.44
The Marquis of Stowe is on the verge of a dreadful scandal that threatens to ruin both him and the lovely, but married, Lady Burnham. Knowing that their secret is out and that her husband will be plotting revenge, the Marquis casts about desperately for a way to avoid the scandal, which he knows is inevitable despite the wealth and good looks that have made him a darling of the Beau Monde. Seeing a perfect solution, he decides to offer marriage to the Duke of Dawlish’s daughter and leaves for the country. Surely the Duke will be grateful for his daughter to make such a matchThere is only one problem – marrying the Duke’s daughter might provide a way out of his current dilemma, but having met her the Marquis is dismayed by her dullness. Horrified at the sacrifice he would have to make, he suddenly realises that there is another way to put the cuckolded husband off the scent and preserve his freedom – as long as he can find a young woman happy to go along with his seemingly foolproof idea. Eager to renew his acquaintance with Ajanta Tiverton, the beautiful daughter of a local Vicar, the Marquis hurtles to the Vicarage to tell her his plan and the role that only she can play. Certain that this will get him out of immediate danger and sure that he can offer an attractive financial incentive to help the impoverished family, it seems that if their daring charade is successful everyone involved will benefit. All Ajanta has to do is play her part and all will be well. Swept into a rich luxurious world they have never known before, the Marquis sets out to charm the Vicar and Ajanta’s sisters. Delighted by their new surroundings and excited by the attention of the eloquent Marquis they cannot believe the happiness Ajanta has bought into their lives. But the Marquis is not the only one masking the truth – Ajanta too has a family secret she would prefer not to share and, as the deception continues and feelings run high, she cannot help but worry what will happen in the final Act of their play and where the curtain will fall.
48 A Marriage Made In Heaven
48 A Marriage Made In Heaven
Barbara Cartland
¥24.44
The Duke of Buckhurst, handsome, wealthy, a brilliant horseman and known to everyone as ‘Buck’ has sworn that he will never marry. Cutting a swathe through the sophisticated beauties of the Beau Monde, who are drawn to his sardonic charm like social butterflies to a bright light, he has only one requirement for his amours – that they are safely married to someone else. That is until he discovers that his heir apparent, his dissolute cousin Edmund, has married an actress. Horrified that a common showgirl will become the next Duchess and bring his family name into disrepute, the Duke is forced by his family into finding a bride. Bored by the very thought of being tied to a young, inexperienced young woman, he sets his loyal sisters the daunting task of choosing a suitable wife within the month, so that he can be married before the Royal races at Ascot. With time running out, Buck’s sisters are in despair – until they meet Lady Samala Wynn, the daughter of the honorable but impoverished Earl of Kenwyn. Lovely, innocent and angel-faced, she seems the ideal bride, but can they persuade her to marry their rakish brother, BuckFor Samala is a young woman with her own ideas about marriage – and they include love and romance. But can a marriage between two strangers, built on a foundation of the groom’s resentment and the bride’s family duty, ever bring happiness and loveAs the Duke, furious at the prospect of losing his freedom, dallies with the latest married woman to fall all too eagerly into his arms and Samala worries how her beloved father will cope living alone in his crumbling estate, it seems that this is a match that is doomed to bring nothing but sadness.
82. A Royal Rebuke
82. A Royal Rebuke
Barbara Cartland
¥24.44
Dashing Lord Victor Brooke has displeased his Godmother, Her Majesty Queen Victoria, with his latest indiscretion with one of her more attractive Ladies-in-Waiting and he is dismayed to find that his punishment means missing his beloved Social Season in London! Her Majesty orders him instead to escort the eighteen-year-old Princess Sydella to Zararis, where she is to marry King Stephan, who has requested an English bride so that his small nation will receive the British Empire’s protection against Russian incursions. Bored and embarrassed, Lord Victor passes off his chore as a ‘secret mission’, but little does he know that his lie is soon to come true. As soon as they embark on a British Battleship, he is astounded to find himself captivated by the Princess’s beauty and her enchanting joie de vivre. And when he saves her from an assassin’s bomb on their arrival at Zararis and then from certain death at sea, he wins her heart, as she has already won his. Yet no sooner than they find love, they know that all is lost – for Sydella is already committed to marry the King of Zararis –
83.The Husband Hunters
83.The Husband Hunters
Barbara Cartland
¥24.44
After the death of her parents, young Andrina Maldon has selflessly borne the responsibility not only for the running a household impoverished by her father’s profligacy but also for the future happiness of her two sisters. Strikingly beautiful as they are, there is no hope of their finding a suitable suitor without someone to introduce them to the Social world. So she travels unchaperoned to London to seek the assistance of the Duke of Broxbourne, her father’s friend and the Godfather she has never met. On the stagecoach journey Andrina has a frightening encounter with a gentleman at a Posting inn – and on arrival at Broxbourne House she is appalled to find that this man is none other than the Duke of Broxbourne himself. At first unwilling to help her, the Duke grudgingly agrees to her requests and although grateful, Andrina despises this arrogant and insensitive man – until, little by little, his true nature is revealed and a very different emotion begins to stir in her heart.
85. Love Forbidden
85. Love Forbidden
Barbara Cartland
¥24.44
Having watched her dissolute father squander the family’s fortune on his disreputable and extravagant lifestyle, young flame-haired beauty Aria Milborne despises the empty glamour of Society. So she is dismayed when she is forced take a job with an American millionaire in order to save the beloved family home, Queen’s Folly, where her brother, Charles, works night and day to make ends meet. Appalled by Dart Huron’s arrogance and the behaviour of his spoilt film star floozy Lulu Carlo, who is desperately trying to marry him, Aria finds herself at loggerheads with her new employer while being pursued relentlessly by his amorous aristocratic friend, Lord BAuckleigh. When Dart offers Aria a fortune to agree to a pretend engagement designed to free him from the grasping Lulu, she finds herself emblazoned across the Press throughout the land to her shame and humiliation. Her heart fills with hate for the dashing Dart Huron until the news that he has been shot almost stops her own heart and she understands that this is not hate at all – This is love.
91. Lord Ravenscars Revenge
91. Lord Ravenscars Revenge
Barbara Cartland
¥24.44
On receipt of a desperate letter, demure young beauty Romara Shaldon rushes to the aid of her distressed sister Caryl, who has run away with the disreputable and cruel Sir Harvey Wychbold, who not only mistreats her, but also refuses to marry her when he finds she is with child. After a violent confrontation that leaves her bloodied and bruised, Romara is ‘rescued’ and taken to the next door home of Lord Ravenscar where, in her concussed, semi-conscious state, she finds herself married to his Lordship as part of his crazy drunken ‘revenge’ on a Society beauty who has spurned him. Appalling as his behaviour has been, Trent Ravenscar’s dashing looks and Nobility steal Romara’s heart as he rescues her stricken sister – but just as Romara realises that she loves the stranger who is her husband, a terrible shooting incident forces her to flee and leave all hope of love behind –
92. From Hate to Love
92. From Hate to Love
Barbara Cartland
¥24.44
Horribly wounded after robbers murdered her dear father and left her for dead, the lovely young Atayla is alone and destitute in Morocco at the Tangiers Mission. So when her only friend, Father Ignatius, tells her of a French lady, the Comtesse de Soisson, who wishes to pay someone to escort her young daughter home to her estranged father, the Earl of Rothwell, she jumps at the opportunity. After a long and tiring journey, she arrives unannounced at Roth Castle with young Felicity and Atayla is dismayed by the violent unwelcoming reception she receives from the dashing but disdainful Earl, who assumes that she has some shady ulterior motive in coming to The Castle. Atayla is at the mercy of a man who hates her and soon it seems she is to be banished from The Castle and from the young girl she has come to care for. But then the Earl’s passions are inflamed in a terrible misunderstanding and his hate is suddenly transformed to an all-consuming love.
93. A Very Naughty Angel
93. A Very Naughty Angel
Barbara Cartland
¥24.44
Small and slight with fair hair the colour of Spring sunshine and china-blue eyes, young Tilda is dismayed that by command of Queen Victoria, because of her Royal connections, she is to marry the Prince of a distant country called Obernia. Not only has she never met the Prince, she does not want to marry him, as she wishes to marry for love one day and certainly not for political convenience. In Munich on her way to meet her Prince, Tilda insists on attending a rowdy Beer hall and becomes embroiled in a violent student riot. But luckily she is rescued by Rudolph, an impossibly handsome dashing stranger, who she had spied on when walking in the woods near King Ludwig’s beautiful Palace, the Linderhof. In their flight from the riots, he is shot by the Police and they take refuge in the home of Frau Sturdel, a local midwife, who helps Tilda to nurse the young man back to health. Soon Tilda has fallen head over heels in love with Rudolph – and he with her. But surely their love is doomed unless, somehow, she can extricate herself from her impending Royal mariage de convenance.
95. A Rebel Princess
95. A Rebel Princess
Barbara Cartland
¥24.44
When her father, the Grand Duke, tells the lovely young Princess Tora of Radoslav that she is to marry the aged King of Salona, she is appalled and horrified. But no amount of pleading by her will change her father's mind. So Tora decides that she must find a way to see her prospective husband without his being aware of her presence and then try to find a way to escape her awful Fate. Since she is a talented musician, she has little difficulty in persuading her dear friend, Professor Lazar Srejovic, the nation's greatest musician, to allow her to join his famous quartet for a concert at the King of Salona's Palace. She devises a cunning plan to escape from the Palace of Radoslav, so that her father cannot stop her and joins up secretly with the Professor's quartet to travel by carriage to Maglic, the Capital of Salona. But on arriving at an inn on the way disguised in peasant dress, she is terrified to unexpectantly overhear a sinister plot to murder and violently overthrow the King of Salona and seize his country by force. Her life is now in danger, but, when a dashing and handsome stranger comes to her rescue when she is hiding in a wood near the inn, she loses her heart to him utterly in a moment and just as quickly loses all hope that they can ever be together. And her future is sealed for ever with no hope of love and happiness.