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We have modified the last code. Now we support the shortest path search in the case of indoor multi floors. We still use the A * algorithm to use the data field that VNode does not use in GraphAdjList as the location where we store the floor properties. In fact, I'm lazy. Under normal circumstances, an int level attribute should be added to VN ...

Preface The last time, I have learned [THE LAST TIME] has always been a series that I want to write, aiming to build up and review the front end. It is also to check and fill in the gaps and share the technology. Welcome to comment on Tucao. The series of articles are first published in the public account [full stack front-end selection], the ...

Preface Why write this article? Remember clearly that I just got a job at node and talked to the interviewer about the event cycle. Then the interviewer asked how the event happened. Under what circumstances is an event... In which scenarios have Events been applied? Before that, it encapsulated an open source network request framework of RxJa ...

1 set the syntax format of html file xsd file Write xsd file according to the properties of POJO. for example <?xml version="1.0" encoding="UTF-8" ?> <schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.zhangyh.com/schema/user" elementFormDefault="qualified"> <element name="user"> ...

I am not good at writing. If there is something wrong, please point out it generously. Thank you very much. To learn things, we need to integrate knowledge with practice. If we only know the theory but never practice it, we will not have a solid grasp of it. It is estimated that we will forget it in a few days. Next, we will practice together ...

I. analysis requirements If your girlfriend sends you a bunch of pictures of clothes, and then asks you which one looks good, you can only choose the one that looks best, what would you do? Why not leave it up to the process to make a choice? The theme of this article is to develop a selection program to solve your girlfriend's selection proble ...

Queue is one of the commonly used data structures, which only allows deletion (outgoing) at the front end of the table (queue head) and insertion (incoming) at the back end of the table (queue tail). The feature is first in, first out, and the first inserted element is deleted first. In jQuery, queue module provides basic functions for animatio ...

In the last article, we explained how the Advisor of a transaction registers with the Spring container, and how Spring configures transactions on classes that configure transactions. In fact, we used the AOP set. We also explained the Advisor, pointcut validation process. So far, the initialization of transactions has been completed. In the sub ...

In the previous article, we analyzed step 2 of doCreateBean() in detail: instantiating bean s, and then we analyzed step 4 of doCreateBean() called "cyclic dependency processing", which is populateBean() method. First, review the main process of Bean loading: In the case of singleton mode, get the BeanWrapper instance object from t ...

function addCSS(cssText){ var style = document.createElement('style'), //Create a style element head = document.head || document.getElementsByTagName('head')[0]; //Get the head element style.type = 'text/css'; //Here you must show that the type attribute of the style element is text/css, otherwise it will not work in ie. ...