nested class c

Given a nested list of integers, implement an iterator to flatten it.Each element was either an integer, or a list--whose elements may also be integers or other lists.Example 1:Given the list [[1,1],2,[1,1]] ,By calling next repeatedly until hasnext returns FALSE, the order of elements returned by next should be: [1,1,2,1,1] .Example 2:Given the list [1,[4,[6]]] ,By calling next repeatedly until hasnext returns FALSE, the order of elements returned by

Two solutions for implementing MySQL nested transactions in PHP: mysql nested I. Problem Origin MySQL official documentation clearly states that nested transactions are not supported: 1. Transactions cannot be nested. This is a consequence of the implicit commit timed Med for any current transaction when you issue a st

thinkphp the data in the nested Loop implementation method by classification, thinkphp nested In this paper, the implementation method of nested loops of data in thinkphp is described. Share to everyone for your reference. The implementation method is as follows: When doing thinkphp, it is necessary to use loops inside the loop, and the second loop is associated

The p tag cannot be nested div, and the p tag is nested div. I declare that my code level is a zero starting point. I just started to learn the front-end, so I am a little white. But is the big God also a little white, so we need to concentrate on code and research, haha ~ I practiced code segments today and found that the effects are different from what I imagined: I thought it was probably a question of

MySQL Nested-Loop Join algorithm learning, nested-loopjoin After playing MySQL for more than two years, I found that many people say that MySQL is inferior to Oracle in terms of optimizer. In fact, to some extent, it is true, however, after all, MySQL is only available in version 5.7, and Oracle has been developed to 12c. Today I have looked at the MySQL connection algorithm. Well, Hash Join is not supporte

Tags: mybatis nested query nesting resultsThe two entity classes are as follows: User class and goods commodity class. One user corresponds to multiple items (a pair of multiple)package Com.leo.entity;import Java.util.list;public class User {private Integer ID; private string Username;private Integer age;private string address;private listGoods commodity categoryPackage Com.leo.entity;public class Goods {private Integer id;private String goodsname;pri

This article will discuss the similarities and differences between simple nested queries and non-nested queries in SQL, through which you can better understand SQL statements. One day's work was to fix the bug of a project, and then we found that its SQL statements were extremely messy, there were a lot of left join and in operations, and nested queries had only

Python nested dictionary comparison value and value implementation example, python nested dictionary example Preface This article provides examples to show you how to compare the values and values of the python nested dictionary and share the values for your reference and learning. I will not talk about them much here. Let's take a look at the detailed introducti

Data nested loops in thinkphp and thinkphp nested loops During thinkphp, nested loops are used in the loop, and the second loop is associated with the outside. The thinkphp official website provides the following documents: The tables I want to use here are: classification table (table 1) and data table (table 2) The effect to be achieved is: In fact, the princ

PHP nested output buffer code instance and php nested code instance PHP output cache can be nested. You can use ob_get_level () to output the nested level.The test results are different in cli and browser (PHP5.4 ). The manual description is as follows: Ob_get_level () will always return 0 inside a destructor.This hap