catalog . Comparison of parser generators . Writing a simple lexer in PHP . phc . JLexPHP: A PHP Lexer(xx.lex.php) Created By Java By x.lex File Input . JFlex . JLex: A Lexical Analyzer Generator for Java . PhpParser 0. Comparison of parser generator…

用c++实现一个publisher/subscriber publisher #include "ros/ros.h" #include "std_msgs/String.h" #include <sstream> /** * This tutorial demonstrates simple sending of messages over the ROS system. */ int main(int argc, char **argv) { /**…

Apache Hadoop 2.9.1 – Hadoop: Writing YARN Applications https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html…

此前说的publisher/subscriber都是广播式的,subscriber被动地接收消息,二者没有request/response这种交互. Service Node Client Node Service Node #include "ros/ros.h" #include "beginner_tutorials/AddTwoInts.h" //由.srv文件生成的头文件 //service函数.提供add功能,入参为srv文件里定义好的request/r…

来源于:https://www.mkyong.com/java/apache-poi-reading-and-writing-excel-file-in-java/ In this article, we will discuss about how to read and write an excel file using Apache POI 1. Basic definitions for Apache POI library This section briefly describe a…

转:http://www.cnblogs.com/wangs/p/3282183.html 项目名称   项目描述 ASM Java bytecode manipulation framework AspectWerkz AspectWerkz - Dynamic AOP for Java Axis Axis - an implementation of the SOAP (Simple Object Access Protocol) submission to W3C Batik Batik…

This article from JavaTuturial Java provides a mechanism, called object serialization where an object can be represented as a sequence of bytes that includes the object's data as well as information about the object's type and the types of data store…

From Thinking in Java 4th Edition. 泛型实现了:参数化类型的概念,使代码可以应用于多种类型.“泛型”这个术语的意思是:“适用于许多许多的类型”. 如果你了解其他语言(例如: C++)中的参数化类型机制,你就会发现,有些以前能做到的事情,使用Java的泛型机制却无法做到. Java中的泛型需要与C++进行一番比较.了解C++模板的某些方面,有助于你理解泛型的基础.同事,非常重要的一点是:你可以了解Java泛型的局限性是什么,以及为什么会有这些限制.最终是要让你理解…

翻译人员: 铁锚 翻译时间: 2013年11月17日 原文链接:   Simple example to show how to use Date Formatting in Java 代码示例如下,说明参见注释: import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; public class TestDate { /** *…

Java log example Logrecord filter import java.util.logging.Filter; import java.util.logging.Level; import java.util.logging.LogRecord; import java.util.logging.Logger; public class SimpleFilter { private static Logger logger = Logger.getLogger("Simpl…