linq foreach example

In the Microsoft Standard LINQ, there is no distinctby extension and foreach extension, but in peacetime use of these two features are often used in the work, in the sense that Microsoft should include these two extensions in LINQ, but in fact why not? This article I would like to say that their understanding of these two extensions! About Distinctby Extensions

In Microsoft's standard Linq, there is no DistinctBy extension or ForEach extension, but these two functions are often used in daily work. In theory, microsoft should include these two extensions in Linq. But why not? In this article, I will talk about my understanding of these two extensions! About DistinctBy Extension As the name suggests, the DistinctBy extens

I talked with others about the performance of linq yesterday. I feel that the performance of linq is not good, but in fact it is still outstanding in terms of performance, except for the ability to write data to SQL, the following is a simple performance test comparison code. Here I will explain that the execution speed of the Code cannot be tested using datetime. I am still a little white, just starting wi

I talked with others about the performance of LINQ yesterday. I feel that the performance of LINQ is not good, but in fact it is still outstanding in terms of performance, except for the ability to write data to SQL, the following is a simple performance test comparison code. Here I will explain that the execution speed of the Code cannot be tested using datetime. I am still a little white, just starting wi

Using system;using system.collections.generic;using system.linq;using system.text;using System.Threading.Tasks; Using system.diagnostics;using autodesk.autocad.runtime;using autodesk.autocad.databaseservices;using Autodesk.autocad.applicationservices;using autodesk.autocad.editorinput;///} } }}At present, LINQ is very efficient, and later development can be assured with LINQ two times development.

You see, LINQ has come to the full, this article is not to explore the right and wrong of LINQ, but through their own development process of a small side to show that LINQ has arrived, and better. For technology, the biggest enemy of innovation is the transformation of the inherent thinking, not the technology itself. 1 Introduction Today, Terry tapped my hand

In PHP, use foreach () to traverse a simple example of a two-dimensional array. PHP uses foreach () to traverse a simple example of a two-dimensional array. The first type of foreach two-dimensional array wants to traverse the whole two-dimensional array with

A few small examples of linq and a small example of linq Private void button#click (object sender, EventArgs e) {int [] numbers = new int [7] {0, 1, 2, 3, 4, 5, 6 }; var result0 = from num in numbers where (num % 2 = 0) select num; foreach (int n in result0) {listBox1.Items. add (n) ;}} private void button2_Click (obje

We previously wroteProgramWhen it comes to paging on the Database End, it is generally difficult to implement it. Especially for SQL 2000 databases, you need to write a bunch of SQL statements or write a stored procedure or something yourself. Now, if you use the LINQ query syntax in vs2008, it will become super simple for developers. At the course introduced by LINQ last Friday (November 20), we discusse

The use of foreach is often used in PHP, and if you use foreach, you must use an array. So in this article, we talk about the array, and we're talking about foreach. foreach has two kinds of syntax: First: Iterate over the given array statement array_expression array. In each loop, the value of the current cell is as

Recently, using the entity Framework to do a small example of MVC, found that the Code with LINQ syntax is still a lot of, decided to study LINQ, to fill in the. NET technology, is not everyone is familiar with these technologies, because the project is simple, not how to use.Reference book LINQ in Action the English v

Python,c#,java inside are similar to the structure of a foreach, STL inside although there is for_each this function, but feel the use is still too cumbersome some, so I realized one. First look at the STL inside the For_each function, the official document on the prototype is as follows: function For_each (inputiterator, inputiterator, function f); The sample code is as follows: For_each Example#include

The foreach basic syntax is as follows: FOREACH ($array _variable as $value) { [Code to execute] } Or FOREACH ($array _variable as $key = $value) { [Code to execute] } In both cases, multiple [code execution] will be executed to be equal to the number of elements in the $ array_variable array. Let's take a look at an example