When you create a dbcontext-based datamodel class, EF accesses the table corresponding to the data warehouse by default in the plural form of the utility object name. For example
Public ClassModeldbcontext: dbcontext {PublicDbset Get;Set;}PublicDbset Get;Set;}}
When you use dbcontext to call the site method, EF performs operations on the database table sites. EF maps the data table of the site to sites by default.
Cancel the default
I have translated many books recently. It is often frustrated by the plural form of nouns, because Chinese is weak in dealing with the plural. For example, projects and projects are all "projects ".
In fact, a popular syntax has gradually been widely used in our oral English, namely "XXX ". So can we introduce this oral English into writing? Can Chinese characters distinguish between single and multiple
// The input format of the application is:// * 3 + 4I 5 + 8i// Operator + N spaces + the first plural number + N spaces + the second plural number/** Auther starshus** Date 04/11/20*/Import java. Io. bufferedreader;Import java. Io. inputstreamreader;// 5.7.10Public class command{Private string CommandLine;Public command (string line) // constructor to obtain the input{CommandLine = line. Trim (); //. Trim (
, Complex (Complexarg), using the argument itself, Also, you must add a const because the Non-const reference does not accept arguments for the const reference type.Q:complex's destructor, Deconstructor's function body notation?A: The plural has two private members, which are double, what do you need to do to do the destruction? If the member variable has pointers, you can set the pointer to null.Q: The overloaded output operator can only be overload
Define a fully defined class (which can be released as a standalone product and become a "foundation project" in many projects). This class is based on (2), extending the function of the + 、-、 * and/operator so that it can be operated with a double type of data. Set complex C; Double D; The result of C+d and D+c is "add the complex with C as the real Part D", and the other-, *,//operators are similar.Questions and codes/* Copyright (c) 2015, Yantai University School of Computer * All rights rese
Enter the code:/** Copyright (c) 2015, Yantai University School of Computer * All rights reserved. * File name: Sum123.cpp * Author: Lin Haiyun * Completion date: April 26, 2015 * Version number: v2.0 * * Problem Description: Read the textbook example 10.1. This example implements a complex number class, but in the ointment, the real and imaginary parts of the plural class are fixed only as double types. The complex can be designed by the technical
(2) Use the friend function of the class, not the member function, to complete the overloading of the above mentioned operators again;Class Complex {public: Complex () {real=0;imag=0;} Complex (double r,double i) {real=r; imag=i;} Complex operator+ (const Complex C2); Complex operator-(const Complex C2); Complex operator* (const Complex C2); Complex operator/(const Complex C2); void display ();p rivate: double real; Double imag;};/ /below defines the member function//T
[C ++] Operator overloading of the plural and Operator Overloading
Definition of operator overloading:
You can perform operations on custom types, such as complex operations. You need to redefine the operator number (create a function ).
Except for the class Relational operators ".", member pointer operators ". *", scope operators ":", sizeof operators, and three-object operators "? : ", All operators in C ++ can be overloaded.
Complex operators
/* (Start of program header annotation)
* Copyright and version Declaration of the program
* Copyright (c) 2011, a student from the computer College of Yantai University
* All Rights Reserved.
* File name: Implements Operator Overloading in the plural class
* Author: Zhang chuanxin
* Completion date: January 1, April 14, 2012
* Version: 1.0
* Description of tasks and Solutions
* Input description:
* Problem description: defines a complex class overloa
Iterator and generator, generator GeneratorIterable
Definition
1 class Iterable(metaclass=ABCMeta): 2 3 __slots__ = () 4 5 @abstractmethod 6 def __iter__(self): 7 while False: 8 yield None 9 10 @classmethod11 def __subclasshook__(cls, C):12 if cls is Iterable:13 if any("__iter__" in B.__dict__ for B in C.__mro__):14 return True15
Generator and iterator in python, python generator Generator
I personally think that iterator and yield implement the same functions, but iterator must be implemented in the class, and yield is implemented in the real function, both of which will save the status.
The generator is also implemented by the iterator.
#! /U
Java Web code generator, which focuses on Java Web project general purpose code generator and Java Web Code Generator
This project is a general code generator for the javaWEB project. jsp, js, And java files are generated based on database tables and custom code templates. It is a powerful tool for developing javaweb p
1 Generator, Python builder,2 3 first, familiarize yourself with the definition of the child,4 generator Function Generator functions ,5A generator function is one that is stored in the definition body'yield'the function of the keyword.6 when the generator function is calle
tool, even if it provides an infinite number of primes is completely feasible, because it provides only one prime each time, there is no memory exhaustion problem. So, does this tool exist? Of course there is, and the name is called Generator (generator).2, Generator (Generator) Principle Introduction: There is a keyw
Advanced Usage Analysis of the iterator and generator in Python, python Generator
Iterator
An iterator is an object attached to the iteration protocol. It basically means that it has a next method. When called, it returns the next item in the sequence. When no project can be returned, A (raise) StopIteration exception is thrown.
The iteration object allows a loop. It retains the state (location) of a single
Python generator summary, python generator Summary
Generator concept:The generator does not save the results in a series, but stores the results in the generator state. A value is returned each time the iteration is performed until the StopIteration exception ends.A
Lightweight "set" iterator-Generator, set-generator
Generator is a new language feature added to PHP 5.5. However, it does not seem to be widely used by many PHP developers. Therefore, before learning about the improvements made by PHP 7 to Generator, let's take a simple but obvious example to understand what problems
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