非常好的数据库10G的开发原版教程，很详细。下了它，估计你会丢弃其它Oracle10G开发的书籍。不信，可以下个试试。

Swift 5 for Absolute Beginners: Learn to Develop Apps for iOS, 5th Edition by Stefan Kaczmarek English | 2019 | ISBN: 1484248676 | 360 Pages | True PDF Stay motivated and overcome obstacles while learning to use Swift Playgrounds and Xcode 10.2 to become a great iOS developer. This book, fully updated for Swift 5, is perfect for those with no programming background, those with some programming experience but no object-oriented experience, or those that have a great idea for an app but haven’t programmed since school. Many people have a difficult time believing they can learn to write iOS apps. Swift 5 for Absolute Beginners will show you how to do so. You’ll learn Object-Oriented Programming (OOP) and be introduced to User Interface (UI) design following Apple’s Human Interface Guidelines (HIG) using storyboards and the Model-View-Controller (MVC) pattern before moving on to write your own iPhone and Apple Watch apps from scratch. What You’ll Learn Work with Swift classes, properties, and functions Examine proper User Interface (UI) and User Experience (UX) design Understand Swift data types: integers, floats, strings, and booleans Use Swift data collections: arrays and dictionaries Review Boolean logic, comparing data, and flow control Use the Xcode debugger to troubleshoot problems with your apps Store data in local app preferences and Core Data databases

使用 NPOI 你就可以在没有安装 Office 或者相应环境的机器上对 WORD/EXCEL 文档进行读写。

SecureCRSecureFX_x64 FileZilla-3.7.3 绿色免安装版

了解linux 内核的整体的架构，是怎么设计的。了解linux 内核的整体的架构，是怎么设计的。了解linux 内核的整体的架构，是怎么设计的。

Linux Device Drivers Development: Develop customized drivers for embedded Linux AZW3版（kindle格式），可以用开源软件calibre-ebook(https://calibre-ebook.com/)打开，里面的图片可以用该软件还原到原本的大图，非常清楚。比PDF转换版的清楚很多。 本书配套源码也包含在zip包中，免去读者下载的麻烦。 本书对Linux内核4.9版的驱动开发进行了全面的讲解，思路清晰，深入浅出，满满的干货，比起国内动不动就复制一大坨代码再写写代码注释的XX书，高出一个级别。本书轻松易读，多动手修改调试随书源码能很快入门。

PHP-Tron-开发 创建地址 $ php 演示/NewAddressDemo.php TRX转账及余额查询 $ php 演示/TrxDemo.php Trc20 代币转账、余额查询和事件监控 $ php 演示/Trc20Demo.php Tron 智能合约部署 $ php 演示/DeployContractDemo.php 联络我 更多源码请联系 wechat: ixinjiei 帮助 http://sc.hubwiz.com/codebag/tron-php-lib/

CSS选择器学习 很好的一份练习 分享学习 It's a fun game to learn and practice CSS selectors. 转自：https://github.com/flukeout/css-diner

下载后直接解压，然后运行index.html即可开始练习 从最简单的标签选择器开始，逐渐提升难度。 总共32关

yolov5-develop,亲测可用