rfm analysis

Vuejs Article 7 Vuejs transition animation case comprehensive analysis, vuejs Comprehensive Analysis This document is a more comprehensive and detailed description of the Code in combination with the official documentation. This document is used in official documents: Http://cn.vuejs.org/guide/transitions.html Next, let's take a look at the transition animation knowledge: ① Definition of transition animatio

Js object-oriented static method and static property instance analysis, js instance analysis This article describes the js object-oriented static methods and static attributes. Share it with you for your reference. The specific analysis is as follows: First look at the following code: Copy codeThe Code is as follows: Thinking: Can we use the Bird method and at

DOM operation instance analysis in jQuery and jquerydom instance analysis This document describes how to perform DOM operations in jQuery. Share it with you for your reference. The specific analysis is as follows: Here we mainly design dom operations, including dom object creation (JS and jquery), attribute modification, style modification, and dynamic binding ev

Preliminary Analysis of the Structure in C language programming, analysis of the C language structure The C-language struct is one of the powerful functions of C and a favorable condition for C ++ language derivation. In fact, when the struct contains function pointers, struct is also the class in C ++. In C language, struct declaration and definition use the keyword struct, just as the union uses the keywo

Analysis of Inter-thread communication 2: read/write locks and spin locks, analysis of spin The mutex and condition variables are used for thread synchronization. This article discusses the use of read/write locks and spin locks, and provides the corresponding code and precautions, the relevant code can also be found in myGithub. Read/write lock The mutex is either locked or unlocked, and only one thread ca

Example Analysis of super keyword usage in Python and python instance analysis This example describes the usage of the super keyword in Python. Share it with you for your reference. The specific analysis is as follows: In the method of a Python class, to call a method of the parent class, before Python 2.2, the usual method is as follows: Code Segment 1: class A:

Linux select and poll implementation mechanism and instance analysis, poll instance analysisWe can implement blocking operations until the upper layer combines select and poll for file operations. How exactly is this implemented?Select Interface:Int select (int nfds, fd_set * readset, fd_set * writeset,Fd_set * effectset, struct timeval * timeout );Where:NfdsNumber of file descriptors to be checked. The value must be the largest among the three fd_set

Example Analysis of reference and replication usage in python and Analysis of python instances This example describes how to reference and copy data in python. Share it with you for your reference. The specific analysis is as follows: In python, any immutable object transmits values, while a mutable object transmits references. Whether it is passing parameters to

Analysis of BFC and IFC, analysis of BFCIFC1. Why does BFC and IFC exist?First, we need to understand two concepts: Box and formatting context;Box:The basic unit of CSS rendering is Box. The Box type is determined by the element type and display attribute. The box type is divided into block-level box and inline-level box (excluding css3 ). Different types of boxes participate in different formatting context

ObjectiveFrom this section into the world of jquery, first start with the jquery entry function to understand how jquery () or $ works, Here I give a minimal example to Analyze.MemoriesBefore we go into the analysis code, What do we think about the way jquery is used? selector,[context] Selector: the string to find Context: the set of DOM elements, documents, or JQuery objects to be found. Element A DOM e

Fault analysis artifact-BTrace, fault analysis God btrace In the past, when I was working on a project, I often encountered problems such as online data source leaks. In addition, various inexplicable problems often occur online. If you want to view method parameters, but some method parameters do not have logs, you can only solve the problem through patch upgrade. If you encounter an emergency bug and can

Analysis of Four common writing methods of declarative cyclic variables, analysis of four variable writing methods Where should I put the Circular Variable declaration in Javascript? Habit 1: do not declare direct use function loop(arr) { for (i = 0; i It is a very dangerous habit to use. In general, the cyclic variable will be used globally as an attribute on the window object, which may affect the nor

Netty3 Source Code Analysis-NIO Server binding process AnalysisThe better a framework encapsulates, the better it is for our high-speed coding. But it hides a lot of details and principles. But the source code can reveal everything.The server-side code is in the specified good ChannelFactory. Set the options. Then the bootstrap.bind operation will open the server. Accepts a peer-to-peer connection.Therefore, it is necessary to analyze the process behi

Step) continue to parse the remaining commands; To Conn_waiting, awaiting the arrival of new events. The Conn_shrink method is executed once each time before the transfer.9. Conn_shrink method is mainly used to deal with the command message container c->rbuf and output content of the container is the data full? Whether the size of the buffer needs to be enlarged and whether the block of memory needs to be moved. Accepts command message initialization memory block size 2048, maximum 8192.Three,

A simple C programAnalyze a simple C program main.c such as:Compile the assembly file with the command gcc–s–o main.s main.c-m32 . There are many virtual instructions in the assembly file that do not form machine instructions , in order to make the analysis simple we remove most of the:Get as shown:Introduction to the Stack Apue that each C program has a separate address space, the typical layout in memory is as follows: The operati

He Bong + Original works reproduced please specify the source + "Linux kernel analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000I. Experimental process1, open the shell, enter the start command, the kernel starts to enter the menu program, support three commands help, version and quit.2. Then use GDB to trace the debug kernel, enter the command Qemu-kernel LINUX-3.18.6/ARCH/X86/BOOT/BZIMAGE-INITRD rootfs.img-s-S3. Press and hold th

"); return __res;}1. Function Purpose:Looking for mem_map[0 ... ( PAGING_PAGES-1)]. Spare items in the. That is, the mem_map[i]==0 item, if found.Returns the physical address, unable to find return 02. Tips:Why is this code implemented in C nested assembly?I personally think the C function will open up the stack frame. The task stack may be contaminated.At the same time, the function needs to be frequently called, in the assembly, the Register-level assembly instruction operation efficiency is h

"Python" Memory Analysis _ _list and array in memory growth modeAfter the list declaration structure is broadly divided into 3 parts, the variable name--list object (structural data + pointer array)--list content , where the ID represents the position of the list object,V reference variable name, v[:] refers to the list object, which is also set up for the other Python sequence structure, which is supported by the following demonstration available IDs

Denqueue_task () function is called in the Deactive_task () function: (2) from the change of the IP value of the CPU, it is explained that after the SWITCH_TO macro is executed, the execution Analysis (3) stack switch position, before and after the switch stack, Current_ The thread_info changes the flags of the current process, pushes the base address of the current stack, saves the current stack top, switches the kernel stack, and saves the EIP (4)

Author: Sandy Original works reproduced please indicate the source "Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000 " Experimental Environment: c+ Linux64 bit (32-bit system may result in different) in accordance with the academic integrity of the terms, I guarantee that this answer is my original, all the references to the external materials have been marked by provenance. one, the creation and format of executa