understand scitools

Look at Uncle Tom's "Do you really understand JavaScript?" ", there are 5 of questions, I have done it all, and then run it in Chrome's console, although only the wrong one, but still carefully read the next answer, in this summary, to see if we understand the underlying principles of these javascript.Topic One (All Global variables are window properties, variable declarations are ahead of time, variable as

to the music you like." Humorous to you that I understand the experience.(I hope Daniel points out the mistake, thank you very much!) ）1.2 Hello StringWith the first sight of you, Masons open JDK1.7 documents with you. I recently want to write some understanding of JDK1.7, all know JDK8 come out, new features I am ready to study in the next stage.Masons want to say that reading the E-document is beneficial to the authenticity. But after all, the dome

to the music you like." Humorous to you that I understand the experience.(I hope Daniel points out the mistake, thank you very much!) ）1.2 Hello StringWith the first sight of you, Masons open JDK1.7 documents with you. I recently want to write some understanding of JDK1.7, all know JDK8 come out, new features I am ready to study in the next stage.Masons want to say that reading the E-document is beneficial to the authenticity. But after all, the dome

When learning Java basic data types and complex data types, especially equals () "= =" and the Hashcode () part, not very understand, also stayed a long time, finally a bit of a look.To understand equals () "= =" and Hashcode (), it's a good idea to first understand the heap and stack in Java memory:The following paragraph is for reference from http://www.cnblogs

Guide Students who are hesitant to study in the pit of Linux or have been in the pit, often ask such eight questions. Today, I will answer all these questions, I hope my views can help you classmates. As the saying goes, "a good beginning is half the success", if you understand the following eight questions, you can have a good start, to build the right learning concept, the natural success of half. 1. What is the use of learning Linux

then go through the subdirectories (that is, subfolders) of the file, so constantly recursive ... isn't that a sequence traversal? -fstype: Find files located in a type of file system, file system types can be found in/etc/fstab What does this parameter mean not to be too understanding, to test a little bit to find nothing, I don't know how to test him -mount #查文件时不跨越文件系统mount点 This parameter seems to be not allowed to go to the subdirectory to find, I tried, sub-d

Original: https://www.w3cschool.cn/php/php-thread.html------------------------------------------------------------------easy-to-understand PHP multithreading solution created by Youj, Carrie last modified 2016-12-01When we do the project, some needs, especially the data response processing takes a lot of time, because PHP is a short life cycle of the scripting language, to the default of 30 seconds, PHP data processing is not completed, PHP life cycle

First, we enumerate the basics of Web site construction in the form of an outline: Each Web site developer must understand the following Web artifacts: 1.HTML 4.01 Use of 2.CSS (style sheet) 3.XHTML 4.XML and XSLT 5. Client Script 6. Server-side scripting 7. Managing Data through SQL The future of 8.Web Secondly, we have the above WEB Introductory Basics to explain: HTML 4.01 HTML is th

majority of the site ranking down the logic! February 24, Baidu database of a careless mistake, let many so-called seoer experts big change Baidu algorithm, big talk about some outside the chain is useless; Unfortunately, the afternoon Baidu database restore normal, everyone's site outside the chain is also basically back to normal, the chain event caused a lot of seoer thinking! Seoer usually how to do outside the chain to achieve no matter how Baidu algorithm changes, but also to stabilize t

Know each other victorious, tell us a truth, in the fierce competition today, the site wants to survive, we must first understand themselves, and then understand the opponents of the site, before they can survive. When you know who you are and what you know about your opponent, you just have to go and win, because you have all the resources. Website optimization work is also so, as long as the first underst

"If you can't explain it to a six-year-old, you don't understand it at all," he said."Well, I tried to be a 27-year-old friend is a JS closure (JavaScript closure) but completely failed." Increasingly feel that there is no teaching and educating atmosphere, in order to understand the closure of JS, I resorted to my English four level of sucking the strength to Google to search for the closure of the package

Article Description: Game Product Planning: Understand the life cycle of internet gaming products. For an activity, changed the boss or changed the user, may not affect too much, but changed the product, the previous activities can not play.Therefore, the product understanding of how much directly affect the activities of the planning of all the work. Operation is a more embarrassing job, especially when I was working, I often lost myself:

interoperability, significant decisions involving storage patterns still have to be made to be right from the start. While it is thought that CIOs should not spend too much effort on data centers to be successful today, Yoshida that CIOs would be better able to understand the real situation hidden in characters and bytes. ” It's becoming more and more important to choose which technology or architecture to follow, because the choice will be with you

Do SEO people generally know that the SEO is divided into white caps, Black Caps, and even a gray hat. Simply put, if you have read the Google Webmaster Guide, you can understand, in line with the search engine quality specifications and in line with the user experience of the SEO method known as white hat, violating the search engine expressly prohibit the use of the SEO method is called black Hat, between white hat and black hat, Can not be clearly

Do SEO people generally know that the SEO is divided into white caps, Black Caps, and even a gray hat. Simply put, if you read the Google website Quality guide, you can understand, in line with the search engine quality specifications and in line with the user experience of the SEO method known as white hat, violating the search engine expressly prohibit the use of the SEO method is called black Hat, between white hat and black hat, Can not be clearly

Tools are easy to use, but one drawback is that you will have to rely on the instructions. For my memory is very poor person, every use of tools to go through the manual is a very painful thing, and there are many pits will forget how to fill. Based on this, I often feel as if I would like to understand the tool manufacturing methods, and then build a good, as if my brain is very impressed with this kind of things, so the next time I have a problem I

Although doing SEO is not the search engine algorithm, also do not have to write search engine so complex calculation method, but the Wuhan SEO Liu June think a little understanding of the search engine calculation method and working principle can effectively promote the realm of SEO, let us webmaster in doing SEO when understand why they do so, This can fundamentally improve the level of SEO. 　1, search engine work can be divided into three stages r

Many terrain detailed settings, understand the word also do not understand what meaning, this preparation one-time experiment finished, thoroughly understand. Also refer to Ceeger translations, Unity Manual, experiments to explain Base Terrain pixel Error pixel tolerance ---Ceeger: Amount of allowable errors in the display of the Terrain Geometry. This is esse

Six big questions that Java beginners must understandFor the problems in this series, everyone who learns Java should understand. Of course, it doesn't matter if you just learn to play in Java. If you think you have surpassed the beginner, but do not understand these problems, please return yourself to the ranks of beginners.Question four: What exactly does the final keyword modify?Shenyang 463 Plastic Surg

Before we can fully understand the origin of the character encoding and Python, it is necessary to make some basic concepts clear, although some concepts we touch and even use every day, but do not necessarily really understand it. For example: Byte, character, character set, character code, character encoding.BytesThe byte (byte) is an abstract computer unit of measurement. 8 binary data consisting of 0 an