There is a big difference between the implementation and the use of select and poll

Readers of this course would like to read the section on function-based content function definition and function scope, because this course will involve more or less the function-based content, and the basic content, I put in the function definition function scope chapter.

This paper directly describes the function parameters and closures, if relevant knowledge, in order to save the chapter, will be related to the word.

Recently has been using flask to write their own blog framework, wait a while to share it, so during this time decided to open a wireless security topic, share some wireless security knowledge.

Okay, nonsense, let's go into today's topic and use the wireless security tools on Kali Linux to password-crack the WPA-encrypted wifi. Since WEP encryption is too low now, skip directly and choose to crack WPA. WPA cracking is through the interception of the handshake between the client and the router, according to the size of the dictionary brute force, that is, the size of the dictionary directly determines the success of the crack.

Specifically to deal with this situation, I believe that a part of the students are specific to the needs of the project to match the character, business needs, solve even. It turns out I did the same. However, it is best to smoke a way out, after all, the distribution of this kind of tools will be used in many places. Now, of course, there are a lot of Daniel's works on GitHub that can be borrowed. Today, I also come to realize it. http://www.cnblogs.com/taweth/

The general idea is simple, is the regular to match to see if there is a query string appears, but for the function of the rich point is handy with the support of the custom string parsing (a little chicken), the optional return is an array or object. Specific processing can be seen in the code:

The main sharing several scenes of the processing code, there are better ways to communicate and promote progress; The code is mainly the use of the front-end ace framework to do the background management system, this ACE is H5 Framework control effect is very much, do compatibility is also very good, a little regret is the control effect is basically written together, It's a lot of trouble to be separated, but this time it's about back-end code that you can share with the framework later. http://www.cnblogs.com/gdtyk/

As long as the element review, you can find that the main part of the Google map with a picture of a piece of the image, as long as the scale or location of a change, will then go to request a new picture, that is, the map is rendered in the back-end, the back end of the image generated to the front end, The reason for not putting the front-end drawing is primarily to consider the client's performance and compatibility. The upper-left and lower-right corners of the control are also located with Div Absolute.

We first introduce the random support in Java, and introduce its implementation principle, and then we focus on some practical scenarios, including shuffle, grab red envelopes, wave numbers, random high-intensity passwords, random selection with weights, etc., discuss how to apply random.

Why the IO multiplexing technology, such as in the Web application, a large number of request connection events, if the use of multi-process processing, that is, a connection to a fork to deal with, so the cost is too large, after all, the creation process is very resource-intensive, if processed in a multi-threaded way, That is, a connection to a thread to handle, when the request concurrency up, the system will be filled with a lot of processing threads, after all, a system creates a thread has a certain limit. At this point, we need the IO multiplexing technology. Common network model, there are multi-process +io multiplexing programming model, there are multi-threading +io multiplexing programming model, such as the famous Nginx default is multi-process +io multiplexing technology to deal with network requests, open Source network library libevent is based on IO multiplexing technology to complete the network data processing. http://www.cnblogs.com/lartj/

The expression is a phrase in JavaScript, then the statement is the whole sentence. An expression is used to calculate a value that the statement uses to execute to make something happen. Essentially, statements define the primary syntax in JavaScript, and statements typically use one or more keywords to accomplish a given task. Statements can be simple, such as notification functions exiting, or complex, such as specifying the number of times a command can be repeatedly executed. The following table lists the syntax and purpose of most JavaScript statements:

About Nvelocity no longer introduce too much, such an article has too many, I just wrap it up for use, the problems encountered in it will be explained in one. Why use the template engine is because to define a different format for the subsequent printing, about the printing follow-up time also and everyone explained, about printing can reveal a little, have thought of using off-the-shelf such as park friend Wu Huacong greatly introduced Lodop, this print is very strong, although there is a free version, But also for the study, in the actual project or to use a more complex print API, so you have to write, this process fortunately there is a basic code for reference, or learn a lot about printing knowledge, whether in the restaurant or KFC and other places will have printed small tickets, not how to care about before, The process is also beneficial until you encounter the need to implement such a printing and the corresponding format to study carefully.

There is a big difference between the implementation and the use of select and poll