what iterator

Introduction to C + + iterator iteratorsIterators can be used to access all the elements of a container class's envelope, which behaves like a pointer. For example, you can use an iterator to traverse the elements contained in a vector container.

After explaining the various containers, I believe you have some knowledge about the iterator. The iterator is one of the several major modules in STL (System Tools, containers, iterators, algorithms, there is no doubt about the importance of the

Programming idea iterator  What is an iterator? Iterator is a mechanism for Traversing elements in one or more containers in a certain order. for example, a for loop is the simplest Iterator, traversing an array is also an iterative process. GOF

[Turn your rational mind slowly into a conditioned reflex] In this article, we describe the iterator pattern, and the topic structure is the same as above. Practice, let's take a look at the environment of our example project: Operating system:

Python function Programming Guide (3): iterator details, python programming guide 3. iterator 3.1. Iterator Overview An iterator is a way to access elements in a set. The iterator object is accessed from the first element of the set until all

ES6 Iterator (Iterator) and for. of loop usage method learning (Summary), es6for. 1. What is an iterator? The generator concept is available in Java, Python, and other languages, and ES6 is also added to JavaScript. Iterator allows us to use the

Behavior mode Overview: Iterator: provides a method to sequentially aggregate elements of an object without exposing the internal representation of the object. Practical scenarios: 1. Access the content of an aggregate object without exposing its

Iterators are the link between the container and the algorithm, which provides an abstract view of the data, so that the person writing the algorithm does not have to care about the specifics of the various data structures.1, iterator overviewAn

Detailed explanation of the iterator IN Ruby and the Ruby Generator D guago recently wanted to build a website. In addition, he had long had the idea of learning a dynamic language. Among the programming languages that meet two conditions, Ruby and

This article mainly introduces the iterator and generator in Python, which involves many important features in Python. For more information, see in Python, many objects can be directly traversed through the for statement, such as list, string, dict,

Es6 notes 5 ^_^ set, map, iterator, es6iteratorI. set1. basic usage The data structure Set is similar to an array, but the Member values are unique without repeated values. Let s = new Set (); [2, 3, 5, 4, 5, 2]. map (x => s. add (x) for (let I of s)

Iterator (iterator) is an indicator used to access elements in the container. In this sense, iterator (iterator) is equivalent to "traversal pointer" in the data structure ", iterator can also be considered as a generalized pointer. The

Transferred from: http://blog.csdn.net/kjing/article/details/6936325Rbegin and rend, very useful!C + + Primer (Chinese version Fourth edition) No. 273 page9.3.2 Begin and End membersThe Begin and end operations produce iterators that point to the

Run: For (iterator it = O. getsons (). iterator (); it. hasnext ();){ R = (knowledgenode) it. Next (); It. Remove (); // if it is changed to O. getsons (). Remove (r);, the concurrentmodificationexception will be thrown. } An exception occurred. It

Both the iterator and generator are unique concepts in Python. The iterator can be considered as a special object. Each time you call this object, it will return its next element. In terms of implementation, an iteratable object must be an object

Iterator modeThe iterator pattern, also called the cursor pattern, provides a way to access individual objects in a container element without exposing the object's internal details .Iterator pattern structureThe iterator pattern consists of the

statement:1, Ben Boven mainly from the "C + + Primer" and "STL Source analysis" These two classic books. At the same time, also referred to the network of many excellent blogs, the authors of these blogs thanked. 2, due to the limited ability of

Before we implemented the iterator pattern, many programming languages actually had built-in iterator classes, such as Java, which implemented the iterator iterator for us. We first look at the source code in iterator.Through the JDK source we found

Checked iterator is an iterator with the out-of-boundary check function, and will trigger error processing during runtime when an out-of-boundary check is performed (call an invalid parameter processing routine or throw an exception ). Vc has

[Cpp]# Include # Include  Class Seat{Public:Seat (int no): no _ (no ){}Int no _;};  Class Table{Static const std: size_t BEGIN_SEAT = 1;Static const std: size_t INVALID_SEAT = 0;Static const std: size_t END_SEAT = 9;Public:Table (){Seats _.