understanding quaternions

Writer:bysocket (mud and brick pulp carpenter)Weibo: BysocketWatercress: BysocketMason first met Navicat is a hashcode method in the Java.lang.Object source code: 1 public native int hashCode(); Why is there a navicat? This is the place where I want to study. So today Masons want to summarize the next navicat.First, the understanding native namely Jni,java native InterfaceAll a language, all hope is pure. For example, t

object? The answer is yes, because the local object can be thought of as a derived type of function, in this sense, They can be equated with user-defined functions. (Echoes the "Built-in data types" section of the Understanding javascript_04_ data Model) var obj=new Object (); is to create the instantiated object obj using the built-in object. var obj={}; and Var obj=[]; This code will trigger the construction of object and array by the JS engine. fu

Difference constraint system personal understanding, constraint personal understanding Today, we are exposed to a mysterious thing: Difference Constraint Personal Understanding: The difference constraint is to give some restrictions to find the optimal solution that meets the conditions, or determine whether the conditions are true. Practices/ideas: 1. First, w

EF preliminary understanding, EF understanding EF stands for ADO. NET Entity Framework. It is an object-link solution developed by Microsoft Based on ADO. NET. Here, the object ing relationship is the program design model and database. EF integrates the two, so that the program designer can operate the database without understanding SQL commands. I have a prelim

, after the call Glfinish. (All the commands for the GPU's rendered frame have been drawn, requiring only one glfinish for synchronization). For Swapbuffer's understanding: Swapbuffer commands to the foreground and the background of the "buffer" pointer exchange, that is, the content of the front desk programming background, the background of the content to change to the foreground. But, however, this function does not perform the conver

In-depth understanding of ini configuration in php (2), in-depth understanding of ini. In-depth understanding of ini configuration in php (2), in-depth understanding of ini, continue to the previous article. 1. changing the configuration during runtime I mentioned in the previous article that the ini_set function can d

Understand OAuth2.0 and oauth2.0. Understanding OAuth2.0, understanding oauth2.0OAuth is an open network standard for authorization, which is widely used in the world. The current version is 2.0. This article describes how to understand OAuth2. OAuth 2.0 and oauth2.0 OAuth is an open network standard for authorization. it is widely used all over the world. The current version is version 2.0. This article

Deep understanding of regular expression syntax and deep understanding of Regular Expressions 4. Selection and grouping (1). Group Character group []: Indicates matching one of several characters Character groups can be understood as combinations of characters. The difference between character groups and common characters is: the abc common character indicates matching a and B, followed by c, and the chara

In-depth understanding of PHP principles of execution cycle analysis, in-depth understanding of PHP This article describes the PHP principle of the execution cycle. Share to everyone for your reference, as follows: The execution cycle of PHP, from the first PHP script we wrote to the last script is executed, the results are executed, this process can be divided into the following stages: First of all, Zend

In-depth understanding of the Count function in PHP, in-depth understanding of Phpcount In PHP programming, when iterating over an array, it is often necessary to calculate the length of the array as the judgment condition for the end of the loop, and in PHP the operations of the arrays are very frequent, so count is a common function, and the following is a look at the concrete implementation of the Count

In-depth understanding of the internal structure of the PHP kernel (v) functions, in-depth understanding of internal structures PHP functions include user-defined functions, intrinsic functions (print_r count ...), anonymous functions, variable functions ($func = ' Print_r '; $func (Array (' A ', ' B ');) PHP kernel source will be divided into the following types of functions #define Zend_internal_function

Understanding OAuth 2.0, Understanding oauth2.0 OAuth is an open network standard for licensing (authorization) that is widely used worldwide and is currently available in version 2.0. This paper makes a concise and popular explanation for the design idea and running flow of OAuth 2.0, and the main reference material is RFC 6749. First, the application scenario To understand the application of OAuth, let

In-depth understanding of the streams tools in PHP, in-depth understanding of phpstreams Streams is a powerful tool that PHP provides, and we often inadvertently use it, and if good use will greatly improve PHP productivity. When you harness the power of streams, your application will ascend to a new height. The following is a description of streams in the PHP manual: Streams was introduced in PHP 4.

Code review should be a fundamental system in any important software development effort. Does not refer to the product process alone-it is everything. and code reviews don't take a lot of time and effort, but it can make a huge impact.　　What can I get from the code review?For code review, check with other people's eyes before the code is submitted to prevent bugs from mixing. This is the most common understanding and the most extensive

A deep understanding of the null "type" in java and a deep understanding of null This article focuses on examples of null "type" in java. The details are as follows. First, we will give a simple null-related question, which will lead to our discussion of null. Later, we will explain the "type" of null according to the official language manual. Question: Can the following programs run correctly? Resolution:

Let's talk about impress. js's preliminary understanding and impress. js's understanding 1. Understanding of impress. js Impress. js uses CSS3 and JavaScript to implement a presentation layer framework (Demo tool) for developers ). Currently, common developers can use impress. js to develop demo tools with similar effects, but the performance is better than FLASH

A deep understanding of variable assignment in Python and a deep understanding of python Preface In Python, the variable name rules, like most other advanced languages, are affected by the C language. In addition, the variable name is case sensitive.Python is a dynamic type language. That is to say, you do not need to declare the variable type in advance. The type and value of the variable are initialized a

change. But for the sake of convenience, I only drew a picture to express the changes of these three prototype references. In the heap, the right side is the memory representation of the function object, the middle is the pointer to the prototype property of the function object, and to the left is the object instance created by the function object. The pointer to the prototype property in which the function object is written dog1,dog2,dog3 the three reference changes corresponding to Dog.protot

A deep understanding of the event transfer mechanism of the View, and a deep understanding of the view Introduction: Currently, there are more and more cool Android controls on GitHub. On the one hand, we can make the App look beautiful, and on the other hand, we developers can learn a variety of knowledge from it. Write this blog post to record the knowledge blind spots that are exposed in the process

A deep understanding of javascript function parameters and closures, and a deep understanding of javascript Recently I have been studying javascript Functions. functions are the first-class objects of javascript. To learn javascript well, I must have a deep understanding of functions. I have compiled the learning process into an article. One is to deepen my