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The generator (generator) is the new data type introduced by the ES6 standard. A generator looks like a function, but can be returned multiple times.ES6 define the generator standard Buddy borrowed from the Python generator concept and syntax, if you are familiar with Python

First, the basic conceptThe generator function is a function that can pause execution, return a iterator object, yield is a paused identityfunction* gen () { 1; 2; }The generator function has a *, with a yield statement inside it.function* gen () { 1; 2; return ' 1 '= Gen ();//Call the generator function to return the iterator object Console.lo

Both the iterator and generator are unique concepts in Python. The iterator can be considered as a special object. Each time you call this object, it will return its next element. In terms of implementation, an iteratable object must be an object that defines the _ iter _ () method, and an iterator must define the _ iter _ () method and next () method () method object. Example Old rule: first run the following code: def add(s, x): return s + xdef ge

1. What is a generatorWith list generation, we can create a list directly. However, with memory limitations, the list capacity is certainly limited. Also, creating a list of 1 million elements takes up a lot of storage space, and if we just need to access the first few elements, the vast majority of the space behind it is wasted. So, if the list element can be calculated according to an algorithm, can we continue to calculate the subsequent elements in the process of the loop? This eliminates th

GeneratorWith a list generation ( [x * x for x in range(10)] for example), we can create a list directly. However, with memory limitations, the list capacity is certainly limited. Also, creating a list of 1 million elements takes up a lot of storage space, and if we just need to access the first few elements, the vast majority of the space behind it is wasted.So, if the list element can be calculated according to an algorithm, can we continue to calculate the subsequent elements in the process o

One or three meta-expressionsTernary expressions, also known as If,else's compact form. The specific usage is as follows:def Max (A, b ): if a>B: return a else: return b def Max (A, b ): return if Else b The functions implemented by the above two functions are exactly the same. A If a>b else B in the second function is a ternary expression. The left is the value returned when the condition is true, the middle is the judging condition, and the right is the value of the co

Script Name: s random password generator _v2.63.ps1Script function: Generate random password. Each password character number, password number, save the location and so on can be customized.Script usage:The script is hard-coded, so you need to open the script and modify the following variables:Total number of generated passwords = 1000$ per password digit = 12$ Disk directory = ' e:\ script ps\log_ps\ '$ large file with drive letter = ' F:\ 'and save,

Original: Rapidjson--c++ Fast JSON Parser and generator time 2015-04-05 07:33:33 Open source China News original Http://www.oschina.net/p/rapidjson April 18 Wuhan Source Chong will start registration, send Huawei Development Board Rapidjson is a C + + fast JSON parser and generator that uses the Sax/dom style API design. Example code: Rapidjson/example/simpledom/simpledom.cpp '#include "R

1, three-dimensional expression#What is ternary expression ternary: three elementsx=1y=2ifX>y:Print(x)Else : Print(y)#becomes ternary expression:Hhh=xifX>yElseyPrint(HHH)#Simple and clear————————————————————————————————————defmax2 (x, y):ifX>y:returnxElse : returnyPrint(Max2 (1,5))#becomes ternary expression:defmax2 (x, y):returnXifX>yElseyPrint(Max2 (1,5))#Can see the ternary expression can be output with a line of the result is very simple!!!! 2. List Deduction formulal=[1,25,35,60,8

1. First install the generator globallysudo npm install-g generator-meanjs2. Create a path for the projectmkdir xmen CD Xmen3. Create an AppYo MeanjsFollow the prompts to enter the application name, description, keyword, whether to create a crud example:4. Run the appsudo node_env=development gruntRunning apps in a development environmentIf you are running with the production environment, you need to do it

Mybatis-generator automatically generate mapping profiles and CRUD operations Project Example: Https://github.com/liangrui1988/mybaits-genconfig Mybaits-genconfig Mybaits generate automatic map configuration file jar Two jar packages under Lib a MySQL link a mybaits provided by the build configuration with a jar configuration Generatorconfig.xml configuration A look at all understand that the example Go to directory Cmd:gen.bat run

Flash Web music MP3 player code builder. Welcome to the Flash Web music MP3 player code builder.Flash Web MP3 player, which is the program that generates the player code, not the player.What's the use of this player?1. When you publish an article on a forum or blog, you need to cooperate with music (such as: Music commentary)Flash Web page MP3 player code generator can easily help you complete the task of adding.2, your forum or blog need to add musi

Song Zhongki wedding Photo Generator usage: 1, open the download address, into the Builder Web version! 2, enter the name, photos and other girls information! 3, the generation and Song Zhongki marriage license! Song Zhongki marriage license Generation: http://5ea4bcdd9895.ih5.cn/idea/ris4x58/vxid_1/senderid_d0fb7fd8fd376419 Me and Song Zhongki wedding photo Builder Tutorial: 1. First, download open me and Song Zhongki wedding