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The main purpose of the HTTP/2 protocol is to improve Web page performance.Header information was originally transmitted directly to the text, and is now compressed after transmission. The original is the same TCP connection, the last response (response) sent out, the server can send the next, can now be sent together with multiple responses.Server Push is the only feature in the HTTP/2 protocol that requir

Weekend to do nothing, see the group interactive answer, just these two days in self-study python, by the way practice grammar.Title: Beer 2 Yuan a bottle, 4 caps for a bottle, 2 bottles for a bottle, ask 10 yuan can drink a few bottles?The first thing we need to do to get things into code in life is to find out the law of things:Drinking bottle caps and bottles, caps and bottles can also be changed, wine a

The code is as follows:Import Java.lang.reflect.field;public class TwoPlusTwo {public static void main (string[] args) throws Exception {class CAC he = Integer.class.getDeclaredClasses () [0]; System.out.println (Cache.getname ()); Field C = Cache.getdeclaredfield ("cache"); C.setaccessible (true); integer[] array = (integer[]) c.get (cache); array[132] = array[133]; System.out.printf ("%d", 2 + 2);}}You ne

#java读取txt文件的第一种方法/*** Method: Readtxt * Function: Read TXT file and add the contents of the TXT file---each line as a string into the list * parameters: TXT file address * back: Map *@paramfile *@return * @throwsIOException*/ Public StaticMapthrowsIOException {MapNewHashmap(); Listfiles.readalllines (paths.get (file)); //here is my interception of the contents of the file, a line divided into 2 paragraphs, the first paragraph is set to map th

By default, there are always three files open, standard input (keyboard input), standard output (output to screen), standard error (also output to screen), and their respective file descriptors are 0,1,2. So let's take a look at the differences between the following redirection methods:>/dev/null 2>1In fact, it should be equivalent to this: 1>/dev/null 2>/dev/null, by default is 1, standard output, so gener

In the previous section, we introduced the probability calculation of hidden Markov, and in this section, we introduce the problem of hidden Markov learning. Before we introduce the learning problem, let's use Python to implement several important concepts. Note that the following code is based on the original formula in the Hangyuan Li Statistical learning method. The formula here does not take the logarithm. So if you generate more than 300 of the data, you'll see a noticeable overflow proble

Del Abc.txt>nul 2>nul This ">nul 2>nul" can mask the output of all the screens can be understood as follows: If a command is executed, but do not want to see the implementation of this command on the screen, you can use "[Command]>nul" can mask the command on the screen output, but some command execution error, that is, the use of ">nul" also can not mask the information generated by the command, so just