angular 2 best practices

A large number of concurrent emergency solutions and practices 2-Use CacheThe method provided by the large number of concurrent emergency response solutions and practices can only be used as a reference for emergency response. It is not recommended for use at the beginning of design, at the beginning of the design, we should adopt a more reasonable architecture t

Array advanced programming practices in JavaScript-2. Advanced javascript programming Let's take a look at the new APIs of arrays in the EcmaScript5 specification. They are very useful, After introducing this part, we will use the Array object to construct a class similar to the ArrayList class in Java, This allows you to encapsulate common logic and reuse code. API: /**@param {Function} callback@param {O

Socket programming practices in Linux (2) introduction to basic socket programming APIs What is Socket? Socket originated from Unix, and one of the basic philosophies of Unix/Linux is "Everything is a file". You can use the "open-> read/write-> close" mode to operate. Socket is an implementation of this mode. socket is a special file, and some socket functions are operations (read/write IO, open, and close)

(element, index, array) {return element > 1;}); Console.log (value); false///Array.prototype.filter = function (callback,thisobject) {};//array filter://Returns the element tested by the function (when the callback function returns True, indicating that the element passed the test), Generate a new array value = Array.filter (function (element, index, array) {return element > 1;}); Console.log (value);//[8, 2, 5]///Array.prototype.forEach = function (

PHP core technologies and practices-PHP and database basics (2) MYSQL bottlenecks and countermeasures 1) increase the buffer and cache values in MYSQL configurations, increase the number of server CPUs and memory size, which can greatly cope with MYSQL performance bottlenecks, in performance optimization, hardware and servers are the most cost-effective; 2)

MySQL replication (2) Master-Slave replication practices, mysqlmaster-slave1. Preparations First, prepare two machines to install mysql My version here is 5.1.73, mysql database installation refer to: http://www.cnblogs.com/tangyanbo/p/4289753.html Centos for linux The machines are: Master: 192.168.1.227 Slave: 192.168.1.225 Scenario: master and slave are both newly created databases, that is, when th

readable message and does not wait to return a enomsg error. Msgflg=msg_noerror Truncation when message size exceeds MSGSZ Msgtyp>0 and Msgflg=msg_except The first message that the receive type is not equal to Msgtype Practice: Message sent int main () { int msgid = Msgget (0x1234,0666| Ipc_creat); if (MsgId = =-1) { err_exit ("Msgget error"); } struct MSGBUF mybuffer; for (int i = 0; i Practice: Message Reception: The data

Yundun practices Mysql series tutorial (2) the best database operations in history that you don't know, mysqlI. Database Operations 1. view the database Show databases; # default database: mysql-user permission-related data test-used for user test data information_schema-MySQL architecture-related data2. Create a database # UTF-8 encoded create database name default charset utf8 COLLATE utf8_general_ci; # g

Some days ago, I wrote continuous integration practices for small-scale product teams.After that, I have been busy with the Project. Today I finally have time to complete this article on the continuous integration of large-scale projects. I. Basics of continuous integration In typical software projects, the integration phase is generally at the end, so there are also the most problems, and the most likely cause failure to deliver on time. Continuous

also illustrates the importance of static testing in the Agile test type.Static testing in the agile development process is the most important work of the pre-development testers of the project iterations. It is worth emphasizing again that during this period the focus of the tester's work is to understand the requirements and use case design carefully, and to validate the feasibility, usability, and validation of the design, which is the best implementation of the requirements.Testers should l

My application to the press last week was finally approved and the publishing contract was finalized. Spring 2: Principles and Practices of the Lightweight J2EE development framework is a book that explains spring design principles, I wrote several members of easyjf. Half completed in the early stage, and there is still one month before the submission time. During this time, I will devote myself to writing

database meets some requirements, such: I. The end date is after the start date Ii. A time period should contain at least x days (or the number of days is greater than x days) Iii. A person already exists in a list (or does not exist in a list) Iv. If some optional fields are required after some fields are entered V. 2. Add "what do you mean ...?" Function I. "... do you want to modify it, but do not update the validity period ?" Ii. "... will this d

-agent.sinks.hdfs-write.type = HDFs Hdfs-agent.sinks.hdfs-write.hdfs.path = hdfs://namenode/user/usera/test/ Hdfs-agent.sinks.hdfs-write.hdfs.writeformat=text # Bind the source and sink to the channel Hdfs-agent.sources.avro-collect.channels = Ch1 Hdfs-agent.sinks.hdfs-write.channel = Ch1 Start the conf2.conf first, then start conf1.conf agent. Because The Avro source should start first then Avro Sink can connect to it. #when use memory change, issue is: Org.apache.flume.ChannelException:Unabl

12 most important J2EE Best Practices (2)-Linux general technology-Linux programming and kernel information. The following is a detailed description. 6. Always use session Facades when using the EJB component. Never expose the entity bean directly to any user type. The object bean can only use the Local EJB interface (Local EJB interfaces ). When using the EJB component, using a session Facades is undoubt

Original: https://blog.risingstack.com/node-js-best-practices-part-2/Unified StyleIt is necessary to create a style guide for a large team to develop JS applications. It is recommended to look at this node. js Style Guide.Jscs is a JS code style checker. The installation commands are as follows:NPM Install Jscs--save-dev Next, add the custom script in the Package.json file:Scripts: { "Jscs": "Jscs Ind

Not used inside the inline Defer: Download scripts in parallel instead of blocking, and after the script is loaded, the browser will run JS in the order of reference before the DOM triggers, setting the "defer" property in the tag when the script does not need to run immediately. (The script is not included in a function block immediately, so it is executed during the loading process.) After setting the "defer" property, ie does not have to wait for the script to load and execute. T

Array advanced programming practices in JavaScript-2 Let's take a look at the new APIs of arrays in the EcmaScript5 specification. They are very useful, After introducing this part, we will use the Array object to construct a class similar to the ArrayList class in Java, This allows you to encapsulate common logic and reuse code. API: /**@param {Function} callback@param {Object} [initialValue]@return {Obj

ArticleDirectory 1. LINQ and LINQ to SQL 2. model object of LINQ to SQL 1. Modify the model class name 2. Add default values and comments for all attributes. 3. Add the isversion attribute to the column attribute of the primary key column. The value is true. 3. Add column (isdbgenerated = true) to the default model attribute of the database) 4. Modify the datacontext class 5. A

ArticleDirectory What is Windows Live SDK? Hands-on practice-cloud album of SkyDrive Windows Phone cloud application development practices (2) Windows Live SDK what is Windows Live SDK? The Windows Live id sdk contains Windows Live APIs, allowing your applications to connect to the Internet through MSN, allowing you to easily experience Microsoft cloud services such as Hotmail,

/master/Config.5. Tips Note that there are usually many line breaks in the configuration file, while the zookeeper client command line does not support character escape. For example, you want to save the content of the configuration file test. ini to zookeeper. The content of the file is as follows.[Common]DB = MySQLPasswd = root You may enter:[zk: 172.17.0.36:2181(CONNECTED) 39] create /Conf/test.ini [COMMON]\nDB=mysql\nPASSWD=root\nThe result is different from what we want:[zk: 172.17.0.36:218