Photoshop Algorithm Implementation Advanced-blur filter-motion blur (24)[Email protected]Http://blog.csdn.net/kezunhaiThe cause of image degradation or blurred image is many, if it is because of the relative motion between the camera and the subject in camera image Blur is called motion blur. The images in the obtained image are often blurred, and we call it motion blur images. Motion Blur is a filter that captures the motion state effect of an objec
--Object-oriented--Duck typeAbstract base classThe lookup order of class variables and object variablesStatic methods, class methods, instance methodsData encapsulation and private propertiesIntrospection mechanism of objectsContext ManagerContextlib Implementing the context ManagerThe search order of super functionsApplication of Mixin inheritance model--asyncio Concurrent Programming--Event LoopsCo-process nestingCall_soon, Call_later, Call_atCall_soon_threadsafeThreadpoolexecutor+asyncioAsync
Recently, began to learn JavaScript, can be described as rookie rookie, although the start is very late, but I know that learning a language cannot be done overnight, but also to come down, "JavaScript Advanced Program Design" is a very good JavaScript primer book, So I decided to study it carefully first. Let's learn the preface and the first two chapters today.1. A brief History of JavaScriptJavaScript was born in 1995, is Netscape Company's Brandon
value is reduced by 1. When the number of references to this value becomes 0 o'clock, it means that there is no way to access the value again, so that it can reclaim the memory space it occupies. That way, when the garbage collector runs again next time, it frees the memory used by those values that have a zero reference count.Summary:Disclaimer: The article has some conceptual relevance, and I cite the book, "JavaScript Advanced programming," since
Iterators and generators are a topic that Python scholars often talk about and I can't mundane because it's worth summing up.IteratorsAn iterator is a tool that operates on an iterative object and spits out one element at a time through the next method. We used the for. In.. The internal use of iterators is the function of an iterator.If you want to customize an iterator class, you need to meet the following criteria:
The __iter__ method needs to be defined in the class to return self i
Let's see what happens when you drag and drop something around you. In the advanced browser is not a problem, we put it under the IE7 test, the problem is out.We can clearly see that the text has been selected. The user experience is not very good, it is not convenient to use. By the way, we've added a return of false to help us solve a lot of problems, if you remove this, chrome will also appear the same problem. That is to say, this return is false;
Last week we sent out 6 free books about Python 's heavyweight technology, which was particularly strong after the launch, with one and the last one just like, but we added a copy to this friend for encouragement, From the other side, you can see the Java Program Ape's love program for Python.This time we continue to force, send books closer to Java technology Professional, more in line with the majority of Java code farmers just need! As a result, the target audience for Java
1. Concept: Springcloudconfig Advanced Configuration2. Specific contentIn Springcloudconfig, considering the security issues that all profiles are exposed to in the remote repository, there is a handling mechanism for secure access that encrypts some data and enables decryption control when read.2.1, key encryption processingThe so-called key processing refers to setting a public operation access password, and then through the Curl command to access t
Linux C Advanced Programming file Operation system CallsTenet: Technical learning is limited, sharing the spirit of unlimited!Library functions are functions that perform certain functions, usually published by a standard organization, and form certain standards. Functions written using library functions can generally be applied to different platforms without any modification, which is very portable.System call functions are directly related to the o
Advanced Programming in the UNIX Environment (third edition) is a well-known programming book for Unix systems.However, the code example in the book, in order to correctly compile the run, you need to prepare the work:1. Download the source codePortal: http://apuebook.com/code3e.html2. Extracting source codeTar XF src.3e.tar.gz3. Install Libbsd-devel, otherwise compile the wrong returnYum Install Libbsd-devel-y4. CompilingCD apue.3e/MAKECP. /include/
Tags: Linux operations from beginner to advanced cultivationUsually do not write anything, want to record their own experience, in case any day need, can turn to find, I think you need to build a blog of their own. In fact, blogging is a good habit, the accumulation will find themselves unconsciously in the continuous improvement and growth.Learning is a process, learning what, how to learn, everyone has a goal in mind. I think the first is to have a
Tags: Linux security aideNiche Blog: http://xsboke.blog.51cto.comNiche Q q:1770058260-------Thank you for your reference, if you have any questions, please contact
I. Introduction of Aide1. Role2. Principle3. InstallationIi. introduction of aide DocumentsThree, aide operation processI. introduction of AIDE
1. Role
AIDE(advanced intrusion Detection Environment, high-level intrusion detection environment), mainly used to de
First, prefaceThis article undertakes the previous section: Spring_ Summary _04_ Advanced Configuration (ii) of the conditions annotated @conditionalWhen we assemble the bean in front, in the spring container, only one bean can match the desired result.If more than one bean can match the result, spring will not be able to make a choice, which is the ambiguity of automatic assembly.In this section we will address the ambiguity of automatic assemblyIi.
ensure that only a single instance exists in the current memory, avoiding memory waste!!!When you create an object, you can no longer use it directly: obj = Foo (), and you should call a special method: obj = Foo.dl ().The essence is actually to define a static method, to determine whether there is already a singleton object, if there is a direct return of the Singleton object, if not, create a singleton object, and then return to a single caseObjectThe last is the description of the special va
One: Cause(0) The basic syntax of Python is easier for a person who has learned other languages, but there is still a way to get a good command of Python's advanced syntax.(1) The WITH statement replaces the try......finally statement; Yield syntax generator generator, sequence generator, functional programming (Map/reduce/filter, PS: map/reduce here is not the Mr of Hadoop)(3) For example, seeTwo: with basic syntax(0) to speak with the syntax, first
Cisco ASA Advanced Configuration first, to prevent IP Shard Attack 1 , Ip the principle of sharding; 2 , Ip security issues with sharding; 3 , Prevention Ip Shards. these three questions have been described in detail before and are not introduced here. For more information, please check the previous article:IP sharding principle and analysis. Second, URL Filter Use ASA Firewall IOS the characteristics URL filtering can control the domain name of the
Recently, I have been reading Nicholas's "JavaScript Advanced Program Design", is really a good book, easy to understand, well-organized than the "JavaScript authoritative guide" good understanding of some, of course, "JavaScript authoritative guide" has the advantages of authoritative guidance, not gossip, into the topic.Read the technical book I usually like to write the code on the book, although it takes time, but only when the hand knocks, the br
The advanced features of some of the VI and ex editors are described in this chapter. This article mainly describes how to customize the editing environment, how to execute UNIX commands in VI, and how to filter text in VI with UNIX commands.Custom VI:There are many options that can be set in the VI editor, which will affect the operation of the VI editor.you can use the EX command ": Set" to change options in VI. Also, as long as VI is open, the ". E
The syntax format for sed:sed [option] {Sed-command} {Input-file}Sed under normal circumstances, the processed lines are read into the pattern space, the script "sed-command (SED command)" on one after the processing, know that the script is complete. Then the line is output, the pattern space is emptied, and then, when the action is repeated, a new line in the file is read in until the file is processed.However, for a variety of reasons, such as when a user wants a command in a script to be exe
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