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
Java (article 30) ----- Iterator, java ----- iterator
Iteration is no stranger to Java. We often use the iterative interfaces provided by JDK to iterate Java sets.
Iterator iterator = list.iterator(); while(iterator.hasNext()){
vector Container
Vectors are a collection of objects of the same type, each with a corresponding integer index value. As with string objects, the standard library is responsible for managing the associated memory of the storage element. We refer to
Reprint to: http://blog.csdn.net/wangshihui512/article/details/9791517iterator invalidation: Typical iterator invalidation.First, for vectors, the add and delete operations may invalidate some or all of the iterators in the container. Then why does
Definition:Provides a method to access each element in a container object without exposing the internal details of the object.
Type:Behavior mode
Class diagram:
If you want to ask the most common mode in Java, the answer is not the singleton mode,
An Introduction to Iterators
Overview
An iterator is a data type that examines the elements inside a container and traverses the elements.
An iterator (iterator) is an object that can be used to traverse some or all of the elements in a
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
Reverse iterator and reverse iterator
C ++ primer (fourth edition of Chinese Version) page 273rd
9.3.2 begin and end members
The begin and end operations generate an iterator pointing to the next position of the first and last elements in the
Definition: provides a way to access the elements of a container object without exposing the internal details of that object.Type: behavior class patternclass Diagram:
If you want to ask one of the most used patterns in Java, the answer is not a
In. net, the iterator mode is encapsulated by ienumerator, ienumerable, and their corresponding generic interfaces. If a class implements the ienumerable interface, it can be iterated. Calling the getenumerator method will return the implementation
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