series 7 notes pdf

first parameter, which is generally called self.class: A class represents a collection of objects, and each object has a class. The primary task of a class is to define the method that it uses for its instances.Polymorphism : polymorphism is an attribute that implements the same treatment of objects of different types and classes. You do not need to know which class the object belongs to to invoke the method.Encapsulation: objects can hide their internal state.Inheritance: A class can make a su

new dictionary whose key is the value of the original dictionary with the key of the original dictionary1D1 = {'Zhang': 123,'Wang': 456,'Li': 123,'Zhao': 456}2D2 = {}3 forName,roominchD1.items ():4 ifTheinchD2:5 d2[room].append (name)6 Else :7D2[room] =[Name]8 PrintD2View CodeTwo, set (set)1, set: unordered element set, similar to dictionary, but no value2. Create:x = Set ()X={key1,key2,....}3. Add and removeX.add (' body 'X.remove (' body ')4, set of operators:-: Difference Set: Inter

PHP Development notes series (9)-array (1 )??? Recently, when I was working on a project, I often needed to process associated arrays. I found many built-in array processing functions in PHP, which are very convenient to use and efficient. I need to repeat them, as the ninth article in the PHP Development notes series

AllDynamic CRM 2013 study notesSeries of articles Dynamic CRM 2013 learning notes (1) plugin input entity Parameter Parsing Dynamic CRM 2013 study notes (2) Basic plug-in usage and debugging Dynamic CRM 2013 learning notes (3) quick creation of entity entitycreater Dynamic CRM 2013 learning notes (4) Docume

study."Java series of Notes" Is my Java application and learning process of notes, according to the Knowledge points Sub-chapters, write this series of notes is the purpose of learning , because the author is the side of the study, the level is limited, there must be omissi

Coolite toolkit is a web control that supports ASP. NET Ajax. It is developed based on a cross-browser extjs library and simplifies the development steps. It also contains a wide range of Ajax applications, which are open-source like extjs. Now I will take my personal notes on this control.ArticleThe directory is organized as follows for your convenience. You are welcome to give your valuable comments and correct your mistakes in this

I. digress Previously, I vowed that this series of notes would be completed in May, but now it is almost impossible. Why is this happening? I have reflected on the following: 1. The learning route is not firm: Python, Django, mysql, and jquery later, disrupt the original plan. 2. Unclear objectives: I don't know how much I want to achieve, what functions I want to implement, and so on, which leads to poor b

configuration file and restart the Apache server(i) using the APACHECTL-T command to test if the configuration file is correct, restart the Apache server with the apachectl restart command:(ii) test the opening of a virtual host using the Curl command:The display cannot be connected. It is only then remembered that the firewall does not open 8080,8081,8082 these ports, open:Vim/etc/sysconfig/iptablesRestart Iptables:Then connect the porttest:8080 with the Curl command, resulting in a

Part VII.Spring Cloud Sleuth46. IntroductionSpring Cloud Sleuth provides a distributed tracking solution for Spring Cloud46.1 terminologySpring Cloud Sleuth borrowed the terms of dapperSpan: The basic unit of work. For example, initiating an RPC is a new span, and receiving an RPC response is also a span. Span is identified by a 64-bit ID, and in addition to the ID, span has other attributes, such as description, timestamp, and so on.Trace: A series o

PHP development Notes Series (4)-file operations ??? For general web applications, data is stored in database tables, but file operations are also required, such as reading and writing files. A typical application scenario is exam registration, when the system starts, it automatically reads the "Registration Notice" content to the memory and displays it on the page when necessary. This article "PHP developm

created.rewrite: A class can implement methods to override these methods and tree shapes defined in its superclass. If the new method calls the overridden version of the method, you can call the unbound version directly from the superclass or use the Super function.sequences and mappings: creating your own sequences or mappings requires methods that implement all the sequence and mapping rules, including __getitem__ and __setitem__, which are special methods. The subclass list and dict can save

[ExtJS learning notes] section 7 Extjs component components and template event method learning The UI user interface of an ext js application is composed of one or more components. All components are subclasses of the Ext. Component class, allowing them to participate in automated lifecycle management, including instantiation, rendering, size, positioning, and destruction. Ext JS provides a

desired effect by using the following methods: function Createfuncrions () { var result = new Array (); for (var i = 0;i Each will return its own index value Impersonation block-level scopes Use anonymous functions to mimic block-level scopes: (function () { alert ("test");//block-level scope, without parentheses the function will be wrapped with an error The obvious disadvantage of using closures and private variables is that they look for more than one level in t

PHP Development notes series (9)-array (3 )??? I wrote two articles about the daily use of Php arrays. this article "PHP Development notes series (9)-array (3)" focuses on the size and sorting of arrays .??? 1. get the array length ??? The count () function returns the number of elements in the array, which is the alia

Study."java series of notes" is my Java application and learning process of notes, according to the knowledge points sub-chapters, write this series of notes is the purpose of learning , because the author is the side of the study, the level is limited, there must be omissi

PHP Development notes series (9)-array (2 )???? I wrote "PHP development note series (9)-array (1)" before going to bed last night, and continued to write "PHP development note series (9)-array (2)" tonight. after Php numeric key array, join key array, multi-dimensional array creation, extraction, array type judgment,

study."Java series of Notes" Is my Java application and learning process of notes, according to the Knowledge points Sub-chapters, write this series of notes is the purpose of learning , because the author is the side of the study, the level is limited, there must be omissi

Deep Learning (depth learning) Learning notes finishing Series[Email protected]Http://blog.csdn.net/zouxy09ZouxyVersion 1.0 2013-04-08Statement:1) The Deep Learning Learning Series is a collection of information from the online very big Daniel and the machine learning experts selfless dedication. Please refer to the references for specific information. Specific v

This series of tutorials is intended for individual learning notes, and if you want to browse may require other programming language basics (such as C), why? Because I write rotten ah, only I can understand!! standard input and outputOne, inputYou need to install the SUBLIMEREPL plugin at this time in sublime. Ctrl+shift+p type Install packages, and then continue typing the SUBLIMEREPL installation an

=11*2=2 2*2=41*3=3 2*3=6 3*3=91*4=4 2*4=8 3*4=12 4*4=161*5=5 2*5=10 3*5=15 4*5=20 5* 5=251*6=6 2*6=12 3*6=18 4*6=24 5*6=30 6*6=361*7=7 2*7=14 3*7=21 4*7=28 5*7=35 6*7=42