what generic collection

Excerpt http://www.cnblogs.com/peida/archive/2013/04/23/3036035.htmlWhat is an annotation (Annotation):　　Annotation (note) Is that Java provides a way and a way for an element in a meta-program to correlate any information with any metadata

form setup:Implementation function: Load grade drop-down boxLoad an Account drop-down box when grade is checkedLoad Grade drop-down box:The first step is to write a method in the DAL layer that retrieves all the grade name sets and returns the

Implementation results:When you click the Grade drop-down box value, get the Account drop-down box valueOne: Load grade drop-down box valueGradedal Layer: //retrieves a collection of all grade names, returning a generic collection list

ObjectiveThe Guava class library has been briefly introduced in the Front (blog: Java code Elegant way-guava (with the relevant jar package download), the following is a brief introduction to the operation of the Set,map,list collection of the use

Haha, it's time to sum up again. Today, we are still reviewing the basic grammar of C #. This summary mainly to a small program-based.The use of Split ()123-456---789-----123-2 to remove the repeating symbol in a similar string and get 123-456-789-12

inheritance, resolving code redundancy in a class;The classes we write inherit directly or indirectly from the object class;The Richter conversion two 1. Subclasses can be assigned to the parent class,//If there is a place that requires the parent

The basic query operations in LINQ are the same as those in SQL, and for similarities and differences, let's look at the following:1) SelectGrammar: public static ienumerable select (this ienumerablesource, Funcselector) Description: The

When creating a list class, the Data Type of the list item may be int, string, or other types, but no matter what type, if the processing method for the List class is the same, there is no need to specify the Data Type in advance, and it is left to

Generic typeGenerics are much more grounded than reflection, delegation, and so on, and in normal work we have contact with generics almost every moment. Most people are more familiar with generics.A generic collection is a collection of type-safe.

Common Operations of DataTable in C, 1. Convert the generic collection class to a able (used when there is no data in the table ): public static DataTable NullListToDataTable(IList list) { var result = new DataTable();

. NET Face Question series catalogueThe IEnumerable is divided into two versions: generic and non-generic. IEnumerable there is only one way to GetEnumerator. If you only need data and do not intend to modify it, you do not want to insert or delete

Using System;Using System.Collections;Using System.Collections.Generic;Using System.Linq;Using System.Text;Using System.Threading.Tasks;Namespace ConsoleApplication2{Class Program{static void Main (string[] args){int[] arr1 = new int[2] {n};int[,]

Using System;Using System.Collections;Using System.Collections.Generic;Using System.Linq;Using System.Text;Using System.Threading.Tasks;Namespace ConsoleApplication2{Class Program{static void Main (string[] args){int[] arr1 = new int[2] {n};int[,]

What is an annotation (Annotation):　　Annotation (note) Is that Java provides a way and a way for an element in a meta-program to correlate any information with any metadata (metadata). annotion (annotation) is an interface that a program can use to

Defined:collection classes in Java: A tool class, like a container, that stores any number of objects with common attributes.Role:Collections can:1, in the interior of the class, the data are organized;2, simple and fast search large number of

First, experience the generic typeProblems in the collection class before JDK1.5--you can add an object of any type to the collection, such as the following code:1 package cn.gacl.generic.summary; 2 3 import java.util.ArrayList; 4 5 public class

What is an annotation (Annotation):　　Annotation (note) Is that Java provides a way and a way for an element in a meta-program to correlate any information with any metadata (metadata). annotion (annotation) is an interface that a program can use to

One: generic classDefine generics on a class: scope is internal to the entire classFormat: public class class name Note: The generic type must be a reference typeImportjava.util.Arrays; Public classGenericclassdemo { Public Static voidMain (string[]

ZZ From: http://www.cnblogs.com/peida/archive/2013/04/23/3036035.htmlWhat is an annotation (Annotation):Annotation(note) Is that Java provides a way and a way to associate any information or any metadata (metadata) with elements in a source program.

Jdk5.0 new features: Collection after jdk1.5, there is a parent interface iterable, the appearance of this interface will be extracted iterator method, improve the extensibility. -------------------------------------------------- Enhanced for Loop: