openGL mainly distinguishes the positive and negative sides through the vertex drawing order to achieve the effect of face culling. It is difficult to understand both sides. How to judge?
Positive and negative distinction:
1. Front: triangle faces connected in the order of anticlockwise vertices 2. Back: triangle face connected in clockwi ...
Posted on Mon, 30 Mar 2020 11:05:44 -0400 by drath
Last article Comparison of C Chen's equality (conventional comparison) Write the instructions for the use of the general method of comparing the equality in C ා, but in the actual development, two reference type objects are often used for comparison, and the reference type contains the properties or fields of the reference type ...
Posted on Sun, 29 Mar 2020 14:15:01 -0400 by oyse
We know that nginx was only used for http load balancing, while TCP and UDP used lvs or haproxy for load balancing, but both of them need to be bound with logical addresses. So the problem is that public virtual machine cannot be bound with logical addresses, so we can only use SLB provided by alicloud, so there will be two problems.
1. Spend ...
Posted on Sat, 28 Mar 2020 12:59:44 -0400 by yumico23
At first, I thought that network flow was a gold medal topic, but I never touched it. Later, I learned that the original network flow was just a template, and the real difficulty was the composition problem. Moreover, if you can see that it was a template topic at a glance, as long as you can construct a diagram, it is not a bi ...
Posted on Sat, 28 Mar 2020 12:14:49 -0400 by asaschool
I summarize the following points of python:Object-oriented
Class and Object Creation
Built-in special properties
Built-in special methodsPS Note: Whether you are working for Python or interested in it, remember: Project development experience is always the core. If you lack new project exercises o ...
Posted on Sat, 28 Mar 2020 00:57:16 -0400 by Hendricus
Believe that many little buddies start their Java tactics: HelloWorld! First, create a class, then write a main method, and finally print out. ojbk is done.When we learn object-oriented, we have to know what classes are, what objects are, and what they are related to.A good example of object-oriented writing on the web has been copied by me to ...
Posted on Fri, 27 Mar 2020 22:04:02 -0400 by nitharsanke
Note: class is a collection of objects with the same properties and methods.
(1) Data/collection type
str(object=''); str(object=b'', encoding='utf-8', errors='strict')
1 >>> str(123)
3 >>> str(['a', 'b', 'c'])
4 "['a', 'b', 'c']"
5 >& ...
Posted on Fri, 27 Mar 2020 13:18:34 -0400 by rdbdba
Python and NumPy index operators'  'and property operators'.'. The Pandas data structure can be accessed quickly and easily in a wide range of use cases. However, since the type of data to be accessed is not known in advance, there are some optimization limitations to using standard operators directly.
It is recommended to optimize the data a ...
Posted on Fri, 27 Mar 2020 11:44:03 -0400 by Amanda1998
Thank you for your reference- http://bjbsair.com/2020-03-27/tech-info/7202/
In this article, we will use Vue to complete the drag effect of the nine palace grid, and introduce the grid layout. The specific code and demo can be accessed by clicking the following hyperlink
Example of effectiveness
Simple understanding of Grid layou ...
Posted on Fri, 27 Mar 2020 09:03:21 -0400 by Glen
Idea: display setting parent element is: table, child element is: cell table, so you can use vertical align: Center to achieve horizontal center
Advantage: the parent element can dynamically change the height (the characteristic of table element)
Disadvantage: not supported under IE8
Posted on Thu, 26 Mar 2020 12:21:35 -0400 by satyricon