; default: do some default stuff}*/switch (true) { case90: console.log(‘优‘); break; case70: console.log(‘良‘); break; default: console.log(‘差‘);}ForUse conditional judgment to control the loop to handle certain things./*for (A;B;C) { do some stuff}其中 A 为初始化的内容,B 为循环的判断条件,C 为每次循环执行后会执行的代码*/for (var010; i++) { console.log(i);}WhileUse conditional judgment to control the loop to handle certain things./*while (Condition) do some stuff}Con
commonly used in 18.python for sequence operations? Please list several and explain its role92. Please briefly describe the adorner and briefly describe the application scenarioV. Object-oriented Python-related88. What is the open-closed principle89. What is the difference between object-oriented and process-oriented?90. What is the object-oriented 3 major feature?5.python is a complete object-oriented language, why?91.python What is the difference between a static method and a class method in
ObjectiveRecent learning process, do not know what kind of thinking divergent, and suddenly met the Queen problem, and then the same cliché, the mind pondering, although the idea of everyone is easy to understand, even the simplest savage backtracking method, said simple, but if you have to code to achieve? Can I write out the code of OK at once? I questioned this, so I wrote the code, found that writing this kind of algorithm problem, the most important is the boundary condition judgment. Here,
Apple Safari browser apple-touch-icon-precomposed and Apple-touch-icon attributes are different, before the online search for the relevant information and Apple's development documentation manual, the two attributes of the difference is not enough detailed, This has led to some confusion at the moment of development.These two properties defined by
Perhaps you have to switch Mac machine several times a day, sometimes you may want to use the CD-ROM, sometimes need to log off the replacement user, the normal operation, are through the screen of various menus to choose, although the way to operate very intuitive menu, but if you add some shortcut keys, can make your movements convenient and fast many, At the bottom is the whole Apple Mac switch machine, logout, shutdown, you can use the shortcut ke
A programmer's review of two years from hardware to software, and a programmer's review of two years
1. Before Software creation
Before entering the software line, I had been engaged in hardware work. I had changed many companies, but I was generally engaged in product testing, maintenance of products, busy work, and low salary. Young people are not afraid of hardship or fatigue because they cannot learn wh
Database review 10--PL/SQL, database review plsqlDatabase review CH10 PL/SQL10.1 PL/SQL Introduction
PL/SQLIt is an Oracle procedural extension of SQL. PL/SQL can implement SQL-related procedural programs andStored ProcedureAndFunctionAllows SQL business logic to reside on the SQL Server to reduce client computing tasks and reduce network I/O.10.2 PL/SQL programm
How long does the review take?1 working day, and later on holidays.How long will it take for the review to arrive?After your application is approved, you can apply for a loan immediately. Open the "pay-as-you-go" app on your mobile phone, "borrow now"-"loan amount"-"installment"-"credit card to be borrowed" to submit a loan application. It takes up to one se
Basic Review of MYSQL and JDBC (I), basic review of mysqljdbc
1. Basic Database review:
1.1 What is a database? In essence, it is a file system. You can use SQL to add, delete, modify, and view data in the database.
1.2 common databases: MYSQL is commonly used in web and small and medium-sized enterprises. It is an open-source free and small-sized database that i
Database review 8 -- concurrency, database review 8Database review CH15 concurrency 15.1 concurrency issues
The I (Isolation, independent) of the ACID nature of the transaction, and the concurrent transactions are transparent. The interspersed transactions will produce multiple data inconsistency problems (different from the Database Inconsistency State ):
Lost
UI review exercise _ Youku layout and ui review Layout
I still remember the previous week. I carefully read my own code and read the code specification. A good code habit should be added to my usual practice.
Check the UI.
I want to deliberately review the previously neglected UI knowledge today. In fact, as a developer, we need to get used to relative layout. F
Java review notes, java Review
I recently want to build two JavaWeb-based network systems. I think of my poor Java skills... Teardown! So it took three days to review the important knowledge of java, mark a note.
Directory
I. Basic Knowledge
Ii. string
Iii. Category
Iv. Management
V. Generic
6. threads
7. Reflection
I. Basic Knowledge
1. Java SE can be divided in
Basic SVG knowledge Review and basic svg knowledge Review
I started my blog for the first time. I want to review the SVG animation I learned when I made the competition last year. Next, write an animation summary for SVG production.
SVG is a language that uses XML to describe two-dimensional graphics and plotting programs..
First, let's take a look at the advanta
Review 6 sessions (December 3)2.5/2.6 module Use2.7 Object-oriented introductionProperties of Class 2.8Method of Class 2.9Built-in Methods for class 3.0Inheritance of the 3.1/3.2 classNotes:Module:Modules are the basic way to organize your code in Python.A python script can run on its own, or it can be imported into another script, which we call a module when the script is imported to run.All. py files can be imported as a moduleThe module name is the
Front-end framework EasyUI (0) Review (preface) and easyui Review
A few years ago, I participated in a project. It is a small information management system with BS structure. The front-end uses the EasyUI framework based on jQuery.
When I joined the Team, the project had entered the development phase for more than half a month. I heard that the framework of the entire project was built by another "Cool-man"
My OS review-Overview of OS, Overview of OS Review
I think the biggest motive force behind learning a certain kind of knowledge is your curiosity when you feel that the existing knowledge is insufficient to solve the current problem. In order to completely break down with the underlying system. Today, we will start to fully review the underlying knowledge of the
Database review 7 -- recovery, database review 7Database review CH14 recovery 13.1 recovery concept
Database SystemRestoreIt refers to the behavior that restores the database from an inconsistent state after a certain "failure" to a normal consistent state. The basis for recovery isRedundancy(Physical redundancy, non-logical)
These failures include:
Transaction
. NET Core 2016 review,. netcore2016 Review
We are reviewing our 2016. Today, let's take a look at 2016 of. NET Core.
Every year, the pace is indeed fast. in a twinkling of an eye, it will be 2017 immediately. In the new year, we will continue with our ideals and aspirations.January
ASP. NET 5 renamed ASP. NET Core 1.0.
Root Cause of renaming: "ASP. NET 5" is an upgraded version of ASP. NET 4.6, which is mo
C ++ knowledge Review (1), knowledge Review
I feel that the World is always agreed, and the first program in every language is always Hello World! However, some books seem to be pursuing individuality and will use others, but they are Not Hello World! I need to learn more about C ++, so from the very beginning. Hello World:
1 // helloworld.cpp2 #include
This may be the simplest program, simply printing "He
JVM review notes and jvm Review
-- Take it easy
Garbage collection:
Young generation ------- serial, parnew, parallel scavengeTenured gencration --------- CMS, Serial old (MSC), parallel old.The parallel scavenge collector is a new generation collector that uses apparel algorithms and parallel multi-thread collectors.It looks like parnew. What's special?-- The characteristics of parallel scavenge collecto
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