common knowledge book

cached or other people can access the machine, you can obtain the user's account and password from the history recordHTTP response package, his structure is as follows:http/1.1 ok//status Line server:nginx/1.0.8//server uses the name and version of the Web software Date:Date:Tue, Oct 04:14:25 gmt//send Time Content-type:text /html//the type of message sent by the server transfer-encoding:chunked//indicates that the sending HTTP packet is a connection:keep-alive//of the segmented outgoing connec

A common thread-creating methods 1-1, Runnable:1-2, Thread:1-3, callable (with Futuretask): 1-4, callable (with thread pool Executorservice and future): 1-5, Anonymous inner class > Inheritance thread 1-6, anonymous inner class > Implementing Runnable Interface II, Thread basics summary 2-1, thread Lifecycle and state transition 2-2, thread scheduling thread priority thread hibernate (Sleep) thread compromise (yield) Thread join (join) thread interrup

(), : 16-05-2006 Select CONVERT (varchar), GETDATE (), 106): 2006 select CONVERT (varchar), GETDATE (), 107 ): 2006 Select CONVERT (varchar), GETDATE (), 108): 10:57:49 select CONVERT (varchar), GETDATE (), 109): 05 2006 10:57:49:437AM Select CONVERT (varchar), GETDATE (), (a): 05-16-2006 select CONVERT (varchar), GETDATE ( ), 111): 2006/05/16 SELect CONVERT (varchar), GETDATE (), 10:57:49:5): 20060516 SELECT CONVERT (varchar), GETDATE (), 113): 16 05 2006 Select CONVERT (varchar), GETDATE ()

can not open a thing, if you are an old Java programmer, you must know log4j, probably also know Commons Logging. It's time to throw them away because there are slf4j and logback. SLF4J to replace Commons Logging, and Logback's goal is log4j.The programmer is angry, slf4j and Logback's author is a, his name Ceki Gülcü, in fact, he is also the author of Log4j. Log4j's State of development really made him so uncomfortable, so he began to build a new alternative.Just a little bit is enough to let

Android:cleartaskonlaunch and Android:finishontasklauch is that the former knows the activity outside of itself, and the latter clears the activity Task from the background. The latter is more commonly used. Each app is assigned a virtual machine process, so you don't want all of the JVM's apps to share the same virtual machine process Use Localbroadcastreceiver or Myview.gethandler for Message Queuing updates, and statically inherit Handler when customizing Handler. Otherwise, it may be

Some common knowledge of configuring DNS servers in Linux-Linux Enterprise Application-Linux server application information. The following is a detailed description. It is particularly important to use and configure DNS for how to implement Intranet and build Web servers or other servers on the enterprise Intranet. Next, we will discuss how to configure DNS in Linux. In Linux, if the server installation mo

1. Set special UA for specific URLs in development we will encounter this situation: the site server will be based on different browser HTTP request UA will have different content, such as some video sites, different UA sent video playback URL is different, So if we want to set a special UA where can we set it?The Webframe::useragentforurl (const webcore::kurl* URL) function in source/webkit/android/jni/webcoreframebridge.cpp can solve this problem.In addition, you can modify it in the webreques

-lowest character, and so on. 3. What does the following code output? Why? 1 console.log (1 + "2" + "2"); 2 Console.log (1 + + "2" + "2"); 3 Console.log (1 +-"1" + "2"); 4 Console.log (+ "1" + "1" + "2"); 5 console.log ("A"-"B" + "2"); 6 console.log ("A"-"B" + 2);Let's look at a few rules first: the sign (+/-) in a number before the numeric string is converted to a number Console.log ("type:" + (typeof ' 3 ') + "content: "+ ' 3 ') // type: string content is: 3 console.log

There are 2 main ways to jump out of the For loop:1. Use the break statement. Such as:int i;for (i=0; i2, with the return statement (generally used in the function body, as the function of the return value out of the function, that is, out of the function body of the For Loop)int fun (int a) {int i;for (i=0; iHttp://www.yalewoo.com/how_to_skip_nested_loop.htmlYou can use the keyword break to exit A for loop.The following example can be used for the specific use method:int I;int a[5]={0,0,0,0,0};

1, Android app start process debugging 1), enter the settings--Accessibility and developer options, if you do not open the developer mode, in the dial-up input *#* #6961 #*#*;2), find the selection of debugging applications, open select the application you want to debug;3), and then the wait for the debugger option to open;4), so that you choose to debug the application in the startup process will automatically enter the debug mode;2. Modify the code source file for Eclipse Debug Lookup Path 1),

IOS notes (common knowledge points) This is some notes I made when I was working on projects at the company ....... // 1. iphone development-change the color of the dot in UIPageControl PageControl. currentPageIndicatorTintColor = [UIColor blackColor]; PageControl. pageIndicatorTintColor = [UIColor grayColor]; // 2. How does ios make the status bar white? [[UIApplication sharedApplication] setStatusBarStyl

the pattern space and divides it by \ n, and then reads the schema space content before it is read into the schema space instead of the previous contentD Delete the first line of the mode space, the first action \ n before the content; D is to delete the schema space so the contentP The first line of the print mode space, the content before the first action, and P is the print mode space so the contentNote, the Print command is typically used after next, before the deleteH Copy the contents of

,intthickness=1,intLinetype=line_8,int Shift=0)//draws a simple or thick elliptic arc or fills an ellipse sector.void Cv::ellipse (Inputoutputarray img, const rotatedrectbox, const Scalar color,intthickness=1,intLinetype=line_8) void Cv::ellipse2poly (Point center, Size axes,intAngleintArcstart,intArcend,intDelta, std::vectorpts)//approximates an elliptic arc with a polyline.void Cv::line (Inputoutputarray img, point pt1, point pt2, const Scalarcolor,intthickness=1,intLinetype=line_8,int Shift=0

In PHP, add the array ('username', 'length', 'min' = gt; 3, 'Max' = gt; 12), where length is found in the following class table, and min and max are in the class file corresponding to length: in CStringValidator, find some of the most common yii knowledge in PHP. The verification length is added in the rules () method.Array ('username', 'length', 'min' => 3, 'Max '=> 12 ),Here, length is searched in the

angular distortion② two standard parallels without any distortion.③ and other deformation lines consistent with the parallels, that is, the same latitude on the deformation everywhere equal④ on the same meridian, the outer side of the two standard parallels is a positive deformation (the length ratio is greater than 1), while the two standard parallels are negative variants (length ratio less than 1). Deformation is more uniform, the absolute value of deformation is also relatively small.⑤ the

successfully, the message is displayed.$ ("#msg"). Ajaxsuccess (function (evt, request, Settings) {$ (this). Append ("Li> successful request! Li > ");});The Jquery.ajaxsetup (options) is set globally for all AJAX requests. View the $.ajax function to get all the options information.Sets the default global AJAX request option.$.ajaxsetup ({url: "/xmlhttp/", Global:false, type: "POST"}); $.ajax ({data:mydata});Serialize () joins a set of input elements in the form of a name and a value. Implemen

abstractions, make it easier to write the correct concurrency code; General annotations (common annotations), string processing, string tools, including splits, joins, fills, and so on; Event Bus (Eventbus), component communication in publish-subscribe mode, does not need to be explicitly registered with other components; I/O, simplifies I/O, especially I/O flow and file operations, for JAVA5 and 6 versions; Reflection (Refle

-letter capitalization filter.First, we create a module 1234 angular.module(‘myApp.filters‘, []).filter(‘capitalize‘, function() {returnfunction(input) {} }); Fliters is actually a function, receive input string, we can do some error check in the function 12345678 angular.module(‘myApp.filters‘, []).filter(‘capitalize‘, function() {return function(input) {// input will be ginger in the usage belowif (input) return input[0].toUpperCase() + input.sl

key and value to dictionaryIn [5]: dic[' A ']=[' B ']In [6]: DICOut[6]: {' A ': [' B ']}With open (xx, ' W ') opens as FD with W:Fd.write (XX)From subprocess import Popen, PIPEReferencing shell commandssuch as: P=popen (' ifconfig ', shell=true)From subprocess Import Popen,pipep = Popen ([' Pidof ', ' MD '],stdout=pipe)P.stdout.read (). Strip Remove/nOpen ('/etc/passwd '). Read () Show all the contents__FILE__ The representative called itself, and the same as theConvert a dictionary to a listI-

"->" Zhufengpeixun "str=str.replace (" Zhufeng "," Zhufengpeixun "). Replace (" Zhufeng "," Zhufengpeixun "); [the first parameter can be a regular] Replace all matches with the regular match (however, as with the catch, the default is lazy, and only the global modifier G is allowed) varstr = "zhufeng2015zhufeng2016";str= Str.replace (/zhufeng/g, "Zhufengpeixun"); console.log (str) ; 1) execution and execution number of issues in fact, the principle of exec capture is identical For example, i