cortana skills

Php object-oriented skills (2) and php object-oriented skills 1. Keywords of self and parent > Self points to the current class and is often used to access static members, methods, and constants. > Parent points to the parent class and is often used to call the constructor and method and members of the parent class. It can also be used to access constants. 1 2, instanceof > Determine whether an object is

PHP development key points and skills Summary (1), php development key points and skills Opcache: Opcache comes from Zend Optimizer + renamed. It is mainly used to improve PHP performance by storing pre-compiled PHP script bytecode in the shared memory, the advantage of storing pre-compiled bytecode is that it saves the overhead of loading and parsing PHP scripts each time, but does not affect the I/O ove

Python programming skills 2. python programming skills Modularization-this is what our programmers dream of. modularization can avoid repeated manufacturing wheels. At the same time The module enables you to logically organize your Python code segments. Assigning relevant code to a module makes your code easier to use and understand. The module is also a Python object and has random name attributes for

14 useful Jquery skills and 14 Jquery skills 1. Return the Jquery object instance through a method Use var someDiv = $ ('# somediv'). hide (); instead of var someDiv = $ (' # somediv'); someDiv. hide (); 2. Use find to find Use $ ('# somediv '). find ('p. someClass '). hide (); Replace $ ('# someDiv p. someClass '). hide (); because it does not need to trigger the Sizzle engine of Jquery, and tries to make

Android development skills 4: Mobile resolution processing tools and Android development skills /***** @ Description: Mobile resolution processing tool class * @ author: * @ see: * @ since: * @ copyright©* @ Date: August 13, 2014 */public class DensityUtil {/*** convert the unit from dp to px (pixel) */public static int dip2px (Context context, float dpValue) {final float scale = context. getResources (). g

= function (CNAME) { var name = cname + ' = '; var ca = Document.cookie.split (';'); for (var i=0; i Summary of knowledge and skills Data type underfined, NULL, 0, False, NaN, empty string. Their logic is not the result is true. Closed package Format Benefits: Avoid naming conflicts (global variable pollution). (function (A, b) { console.log (a+b);//30 }) (10, 20); Intercepting and emptying an array var arr = [222]; Arr.

path attribute of the location section mentioned above, we can achieve unified management of the Web.config configuration. We can put each file or directory configuration in the root directory of the web.config file, the code is as follows: End: This thoroughly straighten out the process of form verification, found a lot of practical skills, the middle of a lot of references to the article, but also through the reflector to see the spe

10 CSS skills required by web designers and css skills required by web designers CSS is the foundation of web designers. Understanding CSS allows them to design more beautiful and distinctive web pages. It is a fascinating thing for designers to use CSS techniques to skillfully deal with CSS. There are many interesting things in the deep-sea world of CSS. You just need to find the one that best suits you. O

This article introduces breakpoint debugging of javascript Debugging techniques. It mainly describes how to use Firebug, debugger, and debugger to add breakpoint debugging to a program. However, these Debugging techniques do not rely on tools other than browsers, other browsers are mainly opera, safari, chrome, and ie8. If you are interested, take a look. First of all, among all browsers, the best support for breakpoint debugging is Firefox, firefox can not only use Firebug to debug page js scri

JavaScript is a very popular programming language. Many developers will select JavaScript as the entry language. This article will share with you seven tips on javascript (1 ), if you are interested in javascript skills, learn JavaScript as a very popular programming language. Many developers will select JavaScript as the entry-level language, this article will share with you some useful things such as the Seven Practical JavaScript

[Original] Vim's usage skills: only when used can we understand "the best IDE is Vim" and vim's usage skills. Half a year ago, I was still wandering in IDE such as Eclipse and ZendStudio. However, for the use of Vim over the past six months, I have to say that Vim is more efficient. It takes time to configure your own Vim. This article is not easy to understand. Of course, I am sorry that it is not a tuto

elementC. Gets the attributes property of the elementD. Access to special collections such as document.forms, document.images, etc. To understand that when using NodeList objects, reasonable use can greatly increase code execution speed. The function throttling described earlier is also a very important aspect. This method is useful for multiple loops, especially when performance is very time-consuming. PS: For JavaScript to compress, reducing the size of the code is also an effective way t

This article mainly introduces common tips for beginners of javascript, including the storage location, format, and focus events of javascript. If you need them, refer to the example below to explain some common skills for beginners of javascript. Share it with you for your reference. The details are as follows: I. Javascript program storage location HTMLInsideHTMLInside* In the. js File Ii. Standard Format Placed in HTMLWhen the browser loads the co

I have been using printf to debug programs, which are generally smooth, but sometimes you will find that a better method is needed. I believe you will find the following JavaScript skills very useful: 1. debugger; As I have said before, you can add a sentence in JavaScript code.debugger;To manually create a breakpoint effect.Do I need a breakpoint with a condition? You only need to useifStatement: The Code is as follows: If (somethingHappens ){ De

IOS development skills-making a ring progress bar and ios development skillsSeveral blogs have written about how to implement a ring progress bar. Most of them are implemented using Core Graph, which is a little complicated and inefficient. It is just a small progress bar, we certainly use the simplest and most efficient method. First look at this blog, blog address: http://www.brighttj.com/ios/ios-implement-loop-progress.htmlThis blog is well written

[MongoDB] Eight optimization skills and eight MongoDB skillsTip 1: Minimize disk access to memory much faster than disk access. Therefore, the essence of optimization is to minimize disk access.The read speed of the memory is 1 million times faster than that of the disk. Reading a disk takes a long time. Several Simple Methods: SSD (solid state drive); increased memory can reduce hard disk reading, so that common documents are stored in the memory; ti

EventBus thread mode development skills and eventbus development skillsPOSTING (default thread mode ): In this mode, the event processing function runs in the thread where the event is released, that is, the event publishing and receiving and processing of the event are in the same thread.Note: 1) Avoid time-consuming operations in the event handler function with the thread model POSTING, because it will block event transmission and may even cause AN

This article mainly introduces common tips for beginners of javascript, including the storage location, format, and focus events of javascript. If you need them, refer to the example below to explain some common skills for beginners of javascript. Share it with you for your reference. The details are as follows: I. Javascript program storage location HTMLInsideHTMLInside* In the. js File Ii. Standard Format Placed in HTMLWhen the browser loads the co

IOS-common skills, ios-skillsTip 1: When writing programs, we cannot write Fixed Screen width and height, for example, 320,480, because we need to adapt to different mobile phones. One common method is to set the width and height in the. pch file, because. pch is a pre-compiled file and can be accessed globally. # Define ScreenHeight [UIScreen mainScreen]. bounds. size. hight; # Define ScreenWidth [UIScreen mainScreen]. bounds. size. width;Tip 2: This

This example for you to share the JavaScript programming learning skills for your reference, the specific contents are as follows 1. Variable Conversion Varmyvar= "3.14159", str= "" +myvar,//tostring int=~~myvar,//tointeger float=1*myvar,//tofloat bool=!! Myvar,/*toboolean-anystringwithlength andanynumberexcept0aretrue*/ Array=[myvar];//toarray However, the conversion date (new Date (MyVar)) and the regular expression (new RegExp