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Transferred from: http://blog.csdn.net/hcx25909/article/details/8811313Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.Directory (?) [-] Installation of a Ros A beginner's Guide to Ros Common functions in the three Ros 1rviz 2tf 3gazebo Four Common Ros robots 1pr2 2TurtleBot 3HuskyErratic before we introduce the characteristics and structure of ROS, we are
Source: From the ancient yueju blog We have introduced the features and structure of ROS. Next we will begin to prepare for the strong Ros. On the Wiki on the ROS official website, the tutorials for new users are very detailed. It is best to clarify all the tutorials for new users. This is the most basic thing for later development. Despite this, Ros is still difficult for beginners to get started. Here, I will summarize my learning history and serve
Imagine creating a library of wikis. Wiki sites contain content that users can create, delete, and modify interactively. Many wikis feature a simple, text-based markup language for creating content. Typically, these markup languages provide only a subset of the functionality available in HTML, but there is a simpler, clearer source format. For example, text that surrounds the asterisk is formatted as bold, and the underlined text is formatted as an un
0. Write in frontFor the first contact with the Linux system, the installation of ns-3 seems unfriendly. But in fact, the installation process is not as complex as it seems to be. In this article, the installation process in the official Wiki is slightly combed, hoping to bring some convenience to those who have just started learning.At the same time, the descriptive narrative in the official Wiki is suffic
method to restore the transaction: DB::rollBack(); Finally, you can submit the transaction using the commit method: DB::commit(); Note: The transaction method of DB facade can also be used to control the transaction of the query statement constructor and Eloquent ORM.Example Assume that you want to store a knowledge point in the database. this knowledge point belongs to two different test sites at the same time, that is, the data of the test site and Knowledge Point are many-to-many relationshi
You may have heard of weblogs, but wikis has no chance to enter your field of view. Both are examples of fast-growing so-called social software-a program that encourages connections with others and communities with good health. Blogs allows individuals to post their views and interests online, wikis is relatively concentrated on website preparation and regular editing through a professional community-these people can not only paste materials on the website, but also freely edit. Recently, wikis
Monitoring statistics function is achieved through the filter-chain extension, if you want to turn on the monitoring statistics function, configuration statfilter, specifically look here: Https://github.com/alibaba/druid/wiki/%E9%85%8D%E7%BD%AE_StatFilter 6. How to use the Druid built-in monitoring pageBuilt-in monitoring page is a servlet, specific configuration look here: Https://github.com/alibaba/druid/wiki
simple, fast and reliable software. Click [here] (https://github.com/golang/go/wiki/GoUsers) to see what good companies are using the go language to drive their business. This article will provide you with all the information necessary to help developers learn more about the best choice for developing WEB applications using the Go language. This article contains the most detailed framework comparisons, from a variety of perspectives, such as populari
account, click "admin" in the upper right corner, and select the "plugins" Link under "general" in the left column on the new page, you can upload and install the compiled Python egg in the upper-right corner of the "Management plug-in" page, and then edit TRAC. configure the INI file.Next, we will officially start introducing plug-ins, which are categorized by experience and functions. Experience autocompleteusers Home page: http://trac-hacks.org/wiki
1. install Tomcat, version 4, and later. Note that it is best to select a folder without spaces during installation and put it in the root directory. For example, D:/tomcat55 /. This is mainly because some wiki plug-ins have requirements for this. 2. download jspwiki: http://www.jspwiki.org/wiki/jspwikidownloaddownload file: jspwi%2.2.33-bin.zip 3. copy the jspwiki In the compressed package. war to Tomcat's
Previously, moinmoin1_topedition was installed in Windows XP as its local Wiki (using MoinMoin desktop edition as a personal local knowledge accumulation tool). Because Ubuntu and Winxp systems are used, it is hoped that the two systems share the same wiki program without data synchronization, which will cause trouble for Data Query and save the maintenance of data synchronization. MoinMoin does not require
Don ' t Repeat yourself (DRY)DRY is one of the simplest laws and is the easiest to understand. But it can also be the hardest to apply (because to do so, we need to do a lot of work on generic design, which is not an easy task). It means that when we find some similar code in two or more places, we need to abstract their generality into a unique new method, and change the existing code so that they can invoke the new method with some appropriate parameters.Reference : http://en.wikipedia.org/
Original article: team collaboration with GitHub GitHub has become the cornerstone of all open source software. Developers like it, collaborate based on it, and constantly develop amazing projects through it. Except ?? Code hosting, GitHub's main attraction is to use it as a collaborative development tool. In this tutorial, let's take a look at some of the most useful GitHub functions, especially those that make the team work more efficient, more productive, and very important and fun! GitHub a
A good programmer generally consists of four aspects: Operation Skills, Knowledge Level, experience layer and ability. I would like to share with you some of the principles in design. I think these things are lessons learned from long-term experience. Every programmer should understand these principles. However, we recommend that you do not adopt dogmatism. You must consider the actual situation when using it. In fact,The following principles can not only be applied to software development, but
1,363 Fork895 Renfufei edited this page in Sep 2014 · Wuyi Revisions PagesBenchmark_aliyun Contributors dbcp Migration Druid Change Log Druid Monitor design druiddatasource dynamic configuration druiddatasource Statistic data log output format Druiddatasource Configuration Druiddatasource Configuration Properties list Druid How to configure the master-slave, have automatic recognition SQL Read only write policy. Druid Support for fair mode issues like WebLogic multiple data source Druid Locks
is to avoid repetition. extends programming constructs exist solely for that purpose (e.g. loops, functions, classes, and more ). as soon as youStart repeating yourself (e.g. A long expression, a series of statements, same concept) Create a New Login action. http://en.wikipedia.org/wiki/Don%27t_repeat_yourself Abstract principles Export Action Principle-Related to dry is the role action principle "each significant piece of functionality in a program
Address: http://kb.cnblogs.com/page/112293/ Good programming principles are closely related to good system design principles and technical implementation principles. The following programming principles have made me an outstanding player in the past few years.ProgramPersonnel, I believe that these principles can greatly improve the programming capability of any developer and enable him to develop programs with stronger maintainability and fewer defects. Do not repeat yourself(Dry-Don't repea
the following principles, not just software development, can be extended to other production activities, even in our lives . Don ' t Repeat yourself (DRY)DRY is one of the simplest laws and is the easiest to understand. But it can also be the hardest to apply (because to do so, we need to do a lot of work on generic design, which is not an easy task). It means that when we find some similar code in two or more places, we need to abstract their generality into a unique new method, and change the
Reprint Address: http://blog.jobbole.com/685/the following principles, not just software development, can be extended to other production activities, even in our lives .Don ' t Repeat yourself (DRY)Dry is one of the simplest laws and is the easiest to understand. But it can also be the hardest to apply (because to do so, we need to do a lot of work on generic design, which is not an easy task). It means that when we find some similar code in two or more places, we need to abstract their generali
Good programming principles are closely linked to good system design principles and technical implementation principles. The following programming principles have made me a good programmer in the past years, and I believe that these principles can greatly improve the programming capabilities of any developer, allowing him to develop programs that are more maintainable and less flawed. I don't want to repeat myself -this is probably one of the most basic tenets of programming development, which
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