iterator interface

Read some of the so-called large companies of the Java interview problem, found that the use of the Java Collection class is more important, and in this respect really is really very little, take the time to learn to learn it.Java.util package

I. Generics (GENERIC)Because the elements put into the collection by default are object types, it is not possible to see their own types, when the operation of these elements need to be transformed to be available, so inefficient and error-prone,

In order to conveniently represent the concept of the file and to store some basic operations for the file, a specialized class--file class is designed in the java.io package.The file class contains most of the function methods for files and

Continue on to the container of the article to know the container, the Masons slowly take you into the list of the container commentary. Today Masons want to talk about ArrayList, LinkedList and vector comparisons.First, List reviewSequence (list),

Set Frame composition diagramExcerpt from Baidu PicturesFirst, Vector collection demoAlthough vectors are not commonly used, it is still useful to know the methodsImport Java.util.arraylist;import java.util.enumeration;import

1. What does the "static" keyword mean? Is it possible to overwrite (override) a private or static method in Java?The "static" keyword indicates that a member variable or a member method can be accessed without an instance variable of the class to

Abstract: Abstract: Original creation Place: http://www.cnblogs.com/Alandre/sediment brick slurry Carpenter hope reprint, keep abstract, thank you!Remember 2 years ago, the most high school life is the teacher's criticism. Thank you! -Mud and brick

PHP5.5 A better new feature is the implementation of support for generators and collaborative programs. For generators, PHP documentation and various other blog posts (like this one or this one) have been explained in great detail. Collaboration

Just contact to the problem, I did not take into account the iterator mode, tried a few general ideas, after the failure .... Directly to look at the source of the implementation of foreach, expect to find a foreach processing object when there is

Introduction Any container, there must be some way to insert the elements and retrieve them again. For the list container, add () is one of the methods to insert the element, and get () is one of the methods for fetching the element. To use a

Definition: provides a way to access each element of an aggregation object sequentially without exposing the internal details of the object. Type: object behavior pattern class Diagram: If you want to ask one of the most used patterns in Java, the

Here all the screenshots of the source code from JDK8 Look at a picture First look at the basic interface of the collection class: Collection, which inherits the Iterable interface. Look at the source of the time found this interface, since there

In this article we will discuss various types of face questions in a Java interview that will allow employers to test the candidate's Java and common object-oriented programming capabilities. The following chapters are divided into two, the first

The recent BI project has been rebuilt, the original data is through the PHP loop analysis of data, change, want to use an iterator. Here I will summarize the PHP iterator Iterators are sometimes called cursors (cursor) software design patterns that

The Java.util package contains a series of important collection classes. This article will start with the analysis of the source, in-depth study of the internal structure of a collection class, as well as traversing the collection of iterative mode

The Java.util package contains a series of important collection classes. This article will start with the analysis of the source, in-depth study of the internal structure of a collection class, as well as traversing the collection of iterative mode

Collection interfaceCollection is the most basic set interface, and a collection represents a set of object, the collection element (Elements). Some collection allow the same elements while others do not. Some can sort and others can't. The Java SDK

This article mainly sorts out the predefined interfaces of PHP, which are commonly used in the project process: IteratorAggregate (Iterator of aggregate Iterator), Countable, ArrayAccess, Iterator, you can refer to the following predefined

PHP interview question (2) 1. please compare the main functions of POSIX and Perl-compatible regular expressions Ereg preg_match Ereg_replace preg_replace 2. explain the impact of safe_mode on php system functions in PHP. ini.Safe_mode is a

I am writing a PHP extension recently. it is found that the internal iterator interface functions of the two versions have some changes, the differences are as follows: {code ...} this change is associated with the PHP version: {code ...} still