erd generator

Self-compiled DAL three-tier code generator and dal three-tier Code Generator (1) Create your own solution directory structure as follows: (2) Compile the Code: (To use a database, we recommend that you create any database) The code for creating the configuration file App. config is as follows: The MainWindow. xaml code is as follows: (change the code in the Grid in MainWindow. xaml) The MainWindow. xa

Python list derivation and generator expression usage example, python Generator This article describes the Python list derivation and generator expression usage. We will share this with you for your reference. The details are as follows: Like the list,List DerivationIt is also represented by square brackets [] and uses a abbreviated for loop. The first part is an

GeneratorGenerator function: The function body contains the yield keyword, the result of which the function executes is the generator, which is essentially an iterator.deffoo ():Print('First ------>') yield1Print('Second----->') yield2Print('Third----->') yield3Print('fouth----->') G=foo () fromCollectionsImportIteratorPrint(Isinstance (g,iterator))Print(g)Yield Features:1. Similar to return, can return a value, but the difference is that the

Additional example of listening file enddeftail (): F= Open ('file','R', encoding='Utf-8') F.seek (0,2) whileTrue:line=F.readline ()ifLine :yield LineImportTime Time.sleep (0.1) G=tail () forIinchg:Print(I.strip ())Send methodSend method:deffunc ():Print('*'*10) A=yield5Print(a)yield10g=func ()Print(g.__next__())Print(G.send ('Wenwen'))#print (g.__next__ ())From which yield begins to execute, send passes a value to the yieldSend cannot be used in the first touch generatorThe number of yield

Python iterator and generator, Python Generator Python iterator and Generator Let's talk about the iterator. It is convenient to use for loop traversal for container objects such as string, list, dict, and tuple. In the background, the for statement calls the iter () function on the container object. iter () is a python built-in function. Iter () returns an

PHP Generator Simple instance, PHP generator Generally when you iterate over a set of data, you need to create a data, assuming that the array is large, it consumes a lot of performance, or even causes memory shortage.Copy the Code code as follows:Fatal error:allowed memory size of 134217728 bytes exhausted (tried to allocate + bytes) in E:\php\test\index.php on L INE 5Range (1, 100000000); PHP5.5 implemen

The project is a common code generator for the Javaweb project, generates the corresponding Jsp,js,java file according to the database table and custom code template, generates the Javaweb Project development tool under the specified path;Project Open Source Address: https://gitee.com/okrs.cn/CodeGeneratorCode generator:The project is a code generator based on the Apache Velocity Java template engineBase_bu

MyBatis Generator (MBG) is a MyBatis code generator that helps us generate corresponding entity classes, XML mapper files, interfaces, and help classes based on the design of tables in the database (that is, we can use this class for simple crud operations). This avoids the need to manually create the corresponding classes and XML files for each table of data, which saves us a lot of time to develop functio

Generator function: If the yield keyword appears in the function, then this function is the generator function, and yield is the function of generating a generator, and the generator function returns a generator.A generator is created by implementing a

List generator in Python, iterator understanding, python Generator First, let's think about a problem. For example, if we want to generate a list between 0 and, what should we do? Of course, it can be written List1 = [1, 2, 3..., 100] It can be seen that this method is not suitable for the growth of the list, so you can use the existing list in Python to generate a new list, called the list generative f

List-derivedy = [1,2,3,4,5,6,7,8= [1,4,9,16,25,36,49,64]# method One:x = [] for inch y: x. append (i*i)print(x)# method Two for inch y] Print (x) for in range (+)print for in y]print(x)Builder expressionExamplesy = [1,2,3,4,5,6,7,8]g= (i*i forIinchY#the list can be inferred, and the generator can also use an expressionPrint(g)Print(List (g))#use list to turn the generator into a list forIinchg:Print(

BackgroundIn JS usage scenario, the processing of asynchronous operation is an unavoidable problem, if do not do any abstraction, organization, just "follow the feeling", then face "in order to launch 3 Ajax request" Requirements, it is easy to write the following code (assuming that the introduction of jquery): //1th Ajax request$.ajax ({URL:' http://echo.113.im ', datetype:' json ', type:' get ', data:{data:json.stringify ({Status:1,data:' Hello World '), type:' json ', timeou

* Using the generator to process CSV files　　Input:.. /data/t_video.csv"9", "Other", "ULTIMATE PHOTO Guide", NULL, "Http://118.190.209.209/media/mp4/1.mp4", "http://118.190.209.209/media/png/ 1.png "," ULTIMATE PHOTO Guide "" 10 "," other "," the VERGE ", NULL," Http://118.190.209.209/media/mp4/2.mp4 ","/HTTP/ 118.190.209.209/media/png/2.the_verge.png "," The Verge "" 11 "," Other "," Microsoft Power BI ", NULL," http://118.190.209.209 /media/mp4/3.mp4

Shanghai waste Yi Mechanical and Electrical Equipment Recycling Co., Ltd.: Shanghai used diesel generator set recycling, imported generator set recycling, the company long-term acquisition of second-hand equipment, waste disabled mechanical and electrical materials. Contact: Mr. Ye Tel: 021-51095947 13661585442 The company has long-term acquisition of second-hand generators, second-hand diesel

In order to learn how to use this software, I found that English is not good. All the documents are in English and cannot be understood, I thought about downloading a software. I thought it was all in English. I could not find a friend to learn with me, but I could not understand the English, so that I could remember it, it will be easy to use in the future. I 'd like to write more details. I used a version later than 7.0, and a friend sent me a version later than 6.5, so use 6.5, 7.0 I reported

Simple Example of Python2 random series generator and python2 series Generator This article describes the Python2 random series generator. We will share this with you for your reference. The details are as follows: # Filename: randNumber. pyimport randomwhile True: try: row = int (raw_input ('Enter the rows: ') cols = int (raw_input ('then Enter the cols :')) m

Python iterator and generator use instance, python generator instance I. Iterators The iterator is only a container object and implements the iterator protocol. It has two basic methods: 1) next MethodReturns the next element of the container. 2) _ iter _ MethodReturn iterator itself The iterator can be created using the built-in iter method. See the example below:Copy codeThe Code is as follows:>>> I = ite

Random number, C language function is rand (), C + + is a random number generator (Random-number generator) = Distribution object (distribution object) + engine (engine); To make a function generate a different random number each time, a static (static) local variable is required so that the distribution object and the engine can hold (hold) state, each time a new one is generated; Generates a random inte

When a soft code generator generates an object, modify the template to simplify entity encapsulation. The Code Generator entity First, right-click the Code Template and choose create template. {If (CodeCommon. DbTypeToCS (c. TypeName). ToString (). Trim (). ToLower ())! = "String") // if the field can be empty and cannot be converted to an empty string{Return CodeCommon. DbTypeToCS (c. TypeName) + "? ";}El

Sharing of Python list generator's cycle skills, python Generator The List generator is list Comprehensions, which is a simple but powerful built-in form that can be used to create a List. One cycle In other languages such as C Language, The for loop is generally like this. If python is written like this, you should take a look at the basic python tutorial ~ However, you need to add a [], or an error