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A brief introduction to the usage summary of 30 CSS3 selectors

?A few selectors that we are more familiar with are: #id .class and tag selectors. But these are not enough. In order to be more convenient in development, this article summarizes 30 CSS3 selectors, hoping to be helpful to everyone.

Dec 19, 2017 am 11:49 AM

css3 Selector

Top 10 Machine Learning Algorithms You Need to Know

There is no doubt that the fields of machine learning and artificial intelligence have received increasing attention in recent years. As big data has become the hottest technology trend in the industry today, machine learning has also achieved amazing results in prediction and recommendation with the help of big data. More famous machine learning cases include Netflix recommending movies to users based on users’ historical browsing behavior, and Amazon recommending books based on users’ historical purchasing behavior. This article mainly introduces the top ten algorithms that need to be understood in a brief discussion of machine learning. It has certain reference value and friends in need can refer to it.

Dec 18, 2017 am 10:38 AM

study machine need

PHP crawls HTTPS website content

Unlike the ordinary HTTP protocol, when using the function file_get_contents() in PHP to obtain the data provided in the API, an error will occur.

Dec 15, 2017 am 11:34 AM

https php content

The most comprehensive summary of HTML5 global attributes

In this article, we will share with you the most complete summary of HTML5 global attributes. First, we need to know what attributes are. Properties are divided into local properties and global properties, which we will briefly introduce.

Dec 14, 2017 pm 03:14 PM

h5 html5 Summary

The most comprehensive summary of array methods

The so-called array is an unordered sequence of elements. If a limited collection of variables of the same type is named, then the name is the array name. The individual variables that make up an array are called components of the array, also called elements of the array, and sometimes called subscript variables. The numeric number used to distinguish the individual elements of an array is called a subscript. In programming, an array is a form of organizing several elements of the same type in an unordered manner for the convenience of processing. These unordered collections of similar data elements are called arrays. In this article, we mainly share with you the most complete summary of array methods. We will use native javascript methods, hoping to help everyone.

Dec 13, 2017 pm 03:35 PM

Solve various IE (IE6-IE10) compatibility issues with one line of code

This article mainly introduces how to solve various IE compatibility issues (IE6-IE10) with one line of code. It is a very good method and I hope it can help everyone.

Dec 11, 2017 am 10:37 AM

MongoDB view execution plan

In this article, we will share with you the knowledge of MongoDB viewing execution plan, hoping to help everyone. The explain() function in MongoDB can help us view query-related information, which helps us quickly find search bottlenecks and solve them. In this article, we will take a look at some uses of explain() and the meaning of query results.

Dec 09, 2017 pm 04:12 PM

mongodb Check plan

Detailed explanation of the principles of PHP multiplayer development environment

As a PHP developer, sometimes we cannot complete a project or a function alone. For example, when a warehouse has more than 1 or 20 developers, each person may develop different modules and functions. Use code version control tools such as To open different git branches, the process is to first set up a complete environment locally, develop it and deploy it in the test environment. After self-test or tester testing, deploy it in the pre-release environment. The pre-release is basically the same as the online environment, and then Check the product for acceptance, and then release it online after the acceptance is completed. Since it is developed in parallel, there must be situations where several functions are accepted or tested at the same time. At this time, whose code is deployed in the pre-release environment? If you switch to A's branch, B will not be able to accept it. So I hope there is a multi-person

Dec 08, 2017 am 09:12 AM

php principle environment

Which one is better, php or java (detailed answer)

Which one is better, php or java? Both prospects are very good. PHP is suitable for beginners to do rapid development of website programming, and JAVA is suitable for software development. There is no absolute good or bad, existence is reasonable. It’s just that the application scenarios are different.

Dec 06, 2017 pm 01:57 PM

java php

Comparison of similarities and differences between several web front-end development frameworks

In recent years, the development of the Internet has become more and more popular, and as programmers, we are overwhelmed with work. During the development process, we will definitely deal with frameworks. There are many types of development frameworks, but each development framework has its own unique advantages. , but shortcomings cannot be avoided. In this article, we will share with you some comparisons of Web front-end development frameworks. I hope you can find a framework that suits you based on this article.

Dec 05, 2017 am 09:32 AM

web Similarities and Differences frame

Several responsive frameworks suitable for web programmers

Now more and more frameworks have entered our development world. In this article, we will share with you several responsive frameworks suitable for web programmers. We hope that you can find many frameworks that suit you through the content of this article.

Dec 04, 2017 am 11:43 AM

web frame programmer

Detailed explanation of sorting algorithm

The so-called sorting is the operation of arranging a string of records in increasing or decreasing order according to the size of one or some keywords in it. Sorting algorithm is how to arrange records as required. Sorting algorithms have received considerable attention in many fields, especially in the processing of large amounts of data. An excellent algorithm can save a lot of resources.

Dec 04, 2017 am 10:58 AM

sort algorithm Detailed explanation

PHP common function summary table

During the development process of PHP, there are frequently used functions. The editor has compiled these commonly used PHP functions into an excel document during daily development, hoping to provide convenience to future friends.

Dec 01, 2017 pm 07:29 PM

php function Summarize

Niao Ge Hui Xinchen, the only member of the PHP open source organization in China

He is the most influential PHP technical expert in China, a core member of the PHP development team, a PECL developer, and an external consultant to Zend Company. He has worked for Yahoo, Baidu, and Sina Weibo as the chief architect of the platform and data department and chief PHP consultant. Hui Xinchen is the core developer of PHP 7 and the main developer of PHP5.4 and 5.5.

Nov 29, 2017 pm 03:20 PM

php only member