做微信小程序项目的时候遇到一个功能，个人信息资料的修改与保存。以下是说明及简化后的代码： 1.页面加载完成时，所有input处于禁用状态；  2.点击编辑按钮时，文字切换成“保存”，身份证input保持始终不可修改状态（即禁用）， 姓名input可以修改（即动态加载切换禁用/启用）； 3.再次点击按钮文字切回“编辑”，所有input变为禁用状态。 以下是wxml部分 <button bindtap=changeInfo>{{text}}</button> //绑定按钮的点击事件 姓名： <input class=

因为mounted函数只会在html和模板渲染之后会加载一次，但是在子组件中只有第一次的数据显示是正常的，所以需要再增加一个updated函数，在更新之后就可以重新进行取值加载，完成数据的正常显示。 beforCreate（创建之前） Created（创建之后） beforMount（载入之前） Mounted（载入之后） beforUpdate（更新之前） Updated（更新之后） beforDestroy（销毁之前） Destroyed（销毁之后） activate（keep-alive组件激活时调用） deactivated（keep-alive组件停用时调用） errorCaptu

1139-Ed.3-The-Technical-Specification-of-VDES_June-2019 建议书

Learn how to implement a DSL with Xtext and Xtend using easy-to-understand examples and best practices About This Book Leverage the latest features of Xtext and Xtend to develop a domain-specific language. Integrate Xtext with popular third party IDEs and get the best out of both worlds. Discover how to test a DSL implementation and how to customize runtime and IDE aspects of the DSL Who This Book Is For This book is targeted at programmers and developers who want to create a domain-specific language with Xtext. They should have a basic familiarity with Eclipse and its functionality. Previous experience with compiler implementation can be helpful but is not necessary since this book will explain all the development stages of a DSL. What You Will Learn Write Xtext grammar for a DSL; Use Xtend as an alternative to Java to write cleaner, easier-to-read, and more maintainable code; Build your Xtext DSLs easily with Maven/Tycho and Gradle; Write a code generator and an interpreter for a DSL; Explore the Xtext scoping mechanism for symbol resolution; Test most aspects of the DSL implementation with JUnit; Understand best practices in DSL implementations with Xtext and Xtend; Develop your Xtext DSLs using Continuous Integration mechanisms; Use an Xtext editor in a web application In Detail Xtext is an open source Eclipse framework for implementing domain-specific languages together with IDE functionalities. It lets you implement languages really quickly; most of all, it covers all aspects of a complete language infrastructure, including the parser, code generator, interpreter, and more. This book will enable you to implement Domain Specific Languages (DSL) efficiently, together with their IDE tooling, with Xtext and Xtend. Opening with brief coverage of Xtext features involved in DSL implementation, including integration in an IDE, the book will then introduce you to Xtend as this language will be used in all the examples throughout the book. You will then explore the typical programming development workflow with Xtext when we modify the grammar of the DSL. Further, the Xtend programming language (a fully-featured Java-like language tightly integrated with Java) will be introduced. We then explain the main concepts of Xtext, such as validation, code generation, and customizations of runtime and UI aspects. You will have learned how to test a DSL implemented in Xtext with JUnit and will progress to advanced concepts such as type checking and scoping. You will then integrate the typical Continuous Integration systems built in to Xtext DSLs and familiarize yourself with Xbase. By the end of the book, you will manually maintain the EMF model for an Xtext DSL and will see how an Xtext DSL can also be used in IntelliJ. Style and approach A step-by step-tutorial with illustrative examples that will let you master using Xtext and implementing DSLs with its custom language, Xtend. Table of Contents Chapter 1: Implementing a DSL Chapter 2: Creating Your First Xtext Language Chapter 3: Working with the Xtend Programming Language Chapter 4: Validation Chapter 5: Code Generation Chapter 6: Customizing Xtext Components Chapter 7: Testing Chapter 8: An Expression Language Chapter 9: Type Checking Chapter 10: Scoping Chapter 11: Continuous Integration Chapter 12: Xbase Chapter 13: Advanced Topics Chapter 14: Conclusions

[计算机科学经典著作].Computer.Graphics,.C.Version.(2nd.Ed)

英文原名：Programming Applications for Microsoft Windows 中文：Windows核心编程

Sipeed 的K210是真的香啊，但是内部的这个esp8285是做的真的不咋地。买回来之后这个8285折腾死我了，好几次固件出问题，掉固件，问了客户姐姐和群主“泽畔”大佬才解决，所以总结下。 下载固件： 首先我们需要先下载8285的固件，在模组的内部是k210是通过串口2和8285进行连接的，8285使用的是AT固件所以我们直接下载乐鑫官网的固件即可。不要使用安信可的固件，因为安信可的固件和8285不兼容。虽然内部是8285但是实际上和8266是没有什么区别的（具体区别可以参考这篇博客：关于ESP8266和ESP8285的对比），所以我们直接下载8266的AT固件即可，如下图所示。 下载烧

这篇文章主要介绍了PostgreSQL物化视图（materialized view）过程解析,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下 1、创建视图 CREATE MATERIALIZED VIEW [ IF NOT EXISTS ] table_name [ (column_name [, ...] ) ] [ WITH ( storage_parameter [= value] [, ... ] ) ] [ TABLESPACE tablespace_name ] AS query [ WITH [ NO ] DATA ] 2、删除

将8个彩灯共阴极接地，阴极分别为EP1C3的8个I/O输出变化的电平，来控制彩灯的点亮，流水灯分不同的时段，指示灯有不同的显示模式，开始时刻LED流水灯从左到右依次点亮，第二时间段LED流水灯从右到左依次熄灭，第三时间段LED流水灯从中间向两边依次点亮，第四时间段LED流水灯从两边向中间依次熄灭，第五时间段LED流水灯由1,4点亮，然后2,5点亮……以此类推，最后完成一次循环又回到开始时刻，进入第二轮循环，来实现LED流水灯的控制实验。

Algorithms in Java 3rd Ed Part5 Graph Algorithms