learn devops from scratch

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pointURI: Uniform Resource LocatorNetwork protocol Five Tuples (network protocol, User IP, user port, service IP, service port)Comparison of Flask and djiago of web development Framework Flask:Concise, quick to get started. Third-party customization EasyDjango:Chatty, it's hard to use a third-party customization, but Django is full. The documentation is comprehensive.4.3 first Flask programFlask Call Format:[[email protected] code]# cat flask_web.py# introduced flask boot module, write dead fr

Learn about Hadoop's release options from scratchoften you will see the question: 0 Basic Learning Hadoop is difficult? Some people replied: 0 Basic learning of Hadoop, not as difficult as imagination, and not so easy to imagine. It was a little awkward to see such an answer, and the question was white, because the answer seemed to have been given nothing. The crux of the question is what is the basis of the "0 Foundation"?the so-called 0 basis can be

ItalicFont-variant:small-caps; Case-sensitive, the browser displays the font of small capsFont-weight:bold; Set Boldfont-size:12px; Font size is 12 pixelsLine-height:1.5em; Row spacing (row height) 1.5 row timesfont-family: "Song Body", sans-serif;//set Chinese font to Arial, English font is Sans-serif} body{Font:italic small-caps Bold 12px/1.5em "song Body", Sans-serif;}The first three sequences have no effect, the last two are fixed and must have shorthand order: Font-style | fo

forget it. Just need to know the class, the field, the property is how to create, how to use, understand the next cookie,session is how to use, and then understand the common server control on the OK, at this time can be on the project, in the project of the envy of learning and growth.Second, the basic understanding of HTML,JS,CSS. As a back-end development,HTML,JS,CSS at the beginning of the time will be common on the line, see the understanding on the OK . Project, will slowly familiar. In a

MainActivity.this.detail.setText (Data.getstringextra (" Endmsg ")); break;default:break;}} }Other.javaPackage Com.example.inten3;import Android.app.activity;import Android.content.intent;import android.os.Bundle; Import Android.view.view;import Android.widget.button;import Android.widget.textview;public class Other extends Activity {private Button returnmsg, Resetbut;private TextView weightmsg, heightmsg;private Double weight, height;private String endmsg; @Overrideprotected void OnCreate (

Address: http://blog.sina.com.cn/s/blog_722b43a60100q5ht.html This tutorial is composedOriginal, reprinted please indicate the source. After reading the previous article, you shouldThe system has a preliminary concept. Before starting the flash, let's continue to learn some basic knowledge. AndroidThere is only one system, but there are many mobile phone manufacturers. Even if Android is usedSystems, different brands, and different models of the sa

Visual Studio and to use the Min version of the script library on-line, we typically introduce the jquery library in the following way:1. Control compilation results script type = "Text/javascript" src= "Scripts/jquery-1.2.6.min.js" Span class= "KWRD" >>script> if (false) {%> "; Six. Enable script IntelliSense in a standalone. js fileAbove we solve the problem of IntelliSense in the page, in fact, in the standalone. js file We can also enable the script IntelliSense, in the Intellisensedemo.js

Learn Java from scratch (i) Hello World Zokung 2005.4 From yesterday began to learn Java, their own in the study of some of the problems and experience sent out for everyone to learn from. To write a Java version of the Hello World program and run it requires the following two steps: 1, download and install JDK5.0 o

Yesterday wrote an Android Demo, the logic is probably from TextView get the value, and then processed and then put back into the TextView. The entire process is triggered by the onclick of a button.But in the process of debugging, a click button on the Force Close dialog box, looked at the long time only to find the problem, the original data type conversion of the exceptionThe original code:String number = (string) text_number.gettext ();The changed code:String number = Text_number.gettext ().

Learn android from scratch (Data Storage (2) Internal Storage. 36 .) CallopenFileOutput()With the name of the file and the operating mode. This returnsFileOutputStream. PassOpenFileOutput () creates a FileoutputStream object Write to the filewrite(). Create a Write object and perform data read/Write operations. Close the streamclose(). Close the link.The above describes the basic steps for saving data f

Learn android from scratch (BroadCast. 45 .) Similar to Service, there is also one of the four main components running in the background in android, which is broadCcast, but he does not need to consider whether there are accepted objects, just consider sending. We can use either of the following methods to use BroadCast: 1. Configure broadCcast in the configuration file. Second, bind broadCcast to the class

provides some performance improvements.Finally we get a very safe and well-structured code:;(function ($,window,document,undefined) {Our code:blah blah blah ...}) (jquery,window,document);And as for this undefined, it is very interesting, in order to get unmodified undefined, we did not pass this parameter, but received it when received, because the actual is not transmitted, so ' undefined ' that position received is the real ' Undefined ' out. It is a technology and a way of thinking that des

}); Topic.subscribe ("MM", function (text)//Accept message, first parameter is message name, second parameter is callback function {alert (text);});});Code Explanation:① initially has two buttons: "Test 1" and "Test 2". Test after 1 click Alert, Test 2 Click to create a New button (can be created multiple times), New button click after alert② about alert behavior: After a click is not a direct alert, but a push message via topic.publish. The first parameter of the push is the message name (uniqu

object. The sample code is as follows:Let Host:cfhost =cfhostcreatewithname (Kcfallocatordefault, "127.0.0.1"). Takeretainedvalue () Let hostnames: Cfarray =cfhostgetnames (host, nil)!. Takeunretainedvalue ()Welcome to follow Dongsheng Sina Weibo@tony_Dongsheng. Learn about the latest technical articles, books, tutorials and information on the public platform of the smart Jie classroom650) this.width=650; "title=" 00.png "src=" http://s3.51cto.com/wy

Type methods Subscript Content such as nested types can also be extended, and extensions can also comply with protocols.Welcome to follow Dongsheng Sina Weibo@tony_Dongsheng. Learn about the latest technical articles, books, tutorials and information on the public platform of the smart Jie classroom?More ProductsIOS,Cocos, mobile Design course please pay attention to the official website of Chi Jie Classroom:http://www.zhijieketang.comSmart-J

the button.If you call the following parameter-free method:Func OnClick () {}The calling code is as follows:Button.addtarget (Self, Action: "OnClick", êforcontrolevents:uicontrolevents.touchupinside)The difference is that the action parameter "OnClick" method name differs, and the colon of the action parameter method name implies that the method name should have several parameters. If the method to be called is the following 3 parameter forms:Func OnClick (Sender:anyobject, Forevent even

keyword, which indicates that this is a mutation method. call method calculates interest, invokes its instance 10_ 000.00 interest1 call method to calculate interest, we cannot use 10_ 000.00 instance calls, but requires a double interest2 interestby2 is the mutation method that directly alters the variable interest2 interest2.interestby2 () After the statement call is complete, the variable interest2 The value of called InterestBy3 method calculates the interest,

the unpacking, the code is modified as follows:Print (Emp.dept!.comp!.name)However, there is a drawback to the display of unpacking, if a link in the optional chain is Nil , it will cause code run-time errors. We can use a more "gentle" way of quoting, using a question mark (? ) to replace the original exclamation point ( ! ), as shown here:Print (Emp.dept?.comp?.name)Welcome to follow Dongsheng Sina Weibo@tony_Dongsheng. Learn about the latest techn

. Learn about the latest technical articles, books, tutorials and information on the public platform of the smart Jie classroom650) this.width=650; "title=" 00.png "src=" http://s1.51cto.com/wyfs02/M01/7C/BF/wKiom1bXmlyyvPsYAAAs2MBEZnc731.png "alt=" Wkiom1bxmlyyvpsyaaas2mbeznc731.png "/>More ProductsIOS,Cocos, mobile Design course please pay attention to the official website of Chi Jie Classroom:http://www.zhijieketang.comSmart-Jie Classroom Forum Web