3D dynamic album
3D dynamic album
Free to do nothing, just write a 3D drag and drop album, pictures can be freely changed, mainly to learn the basis of js! Let's see the effect first. Of course, it's static. You can drag and drop it. Talk less nonsense. Above:
First of all, of course, we should learn layout. If we don't know the layout, we can ...
Posted by trent2800 on Thu, 19 Dec 2019 07:27:55 -0800
Qt Writing Security Video Monitoring System 16-Device Playback
1. Preface
Device playback module is added later, the core is to play real-time and historical videos by combining rtsp video stream addresses. At present, many manufacturers such as Haikang, the number one on the market support direct rtsp to play a channel video stream and playback a channel video stream through NVR. These formats can be sear ...
Posted by TFD3 on Wed, 18 Dec 2019 19:03:55 -0800
leetcode-53-maximum subarray-java
Topics and use cases
package pid053;
/*Maximum suborder sum
Given an integer array nums, find a continuous subarray with the largest sum (subarray contains at least one element), and return its maximum sum.
Example:
Input: [- 2,1, - 3,4, - 1,2,1, - 5,4],
Output: 6
Explanation: the sum of continuous subarrays [4, - 1,2,1] is ...
Posted by bluejay002 on Wed, 18 Dec 2019 14:25:45 -0800
GoLand 2019.3 activate cracking tutorial (permanent)
Note: this tutorial patches, activation code collection and network, if there is infringement, please contact the author to delete!
On November 28, 2019, JetBrains released Go's strongest editor, GoLand, March 2019. This update software consumes less CPU and faster performance, enhances support for Go Modules, adds a new set of quick fixes, and ...
Posted by angel_cowgirl on Wed, 18 Dec 2019 02:20:06 -0800
On PHP Namespace
End of closure[ see ], explore namespace again.
For namespaces, the official documentation has been detailed[ see ], I have done some practice and summary here.
One of the most explicit purposes of namespace is to solve the problem of duplicate names. Two functions or classes are not allowed to have the same name in PHP, otherwise a fatal err ...
Posted by Hikari on Wed, 18 Dec 2019 02:03:54 -0800
Using X64 assembly language to write high performance SM3 hash algorithm code
Description of C language style operators used in this paper:
=Assignment
==Equal to
< less than
< = less than or equal to
~Reverse by position
&Bitwise AND
^Bitwise XOR
|Bitwise OR
< cycle left
>>>Cycle right
4.1 initial value There's nothing to say about this. Just copy the standard documents:
7380166f 4914b2 ...
Posted by nEmoGrinder on Tue, 17 Dec 2019 20:08:40 -0800
Introduction and Setup of Ceph(CephFS) File System
1: Introduction before installation
A Ceph (CephFS) file system requires at least two RADOS pools, one for data and one for metadata. When configuring these pools, we should consider the following three points
Use a higher level of replication for the metadata pool, because any data loss in this pool may render the entire file system inacces ...
Posted by renj0806 on Tue, 17 Dec 2019 18:20:04 -0800
HTML individual instance
1. Use HTML for the first time
<title>First use HTML</title>
</head>
<body>
hello，HTML
2. Text processing
<title>text processing </title>
</head>
<body>
<!-- Title -->
<h1>First level title</h1>
<h2>Secondary title</h2>
<h3>Third le ...
Posted by jasonX on Tue, 17 Dec 2019 14:51:00 -0800
Calculate the distance between two longitude points? (Haversine formula)
How to calculate the distance between two points specified by longitude and latitude?
For clarity, I want the distance in kilometers; these points use the WGS84 system, and I want to know the relative accuracy of the available methods.
#1st floor
This is a simple PHP function that gives a very reasonable approximation (error range is ...
Posted by MFHJoe on Tue, 17 Dec 2019 01:56:12 -0800
Common macro collations in Linux kernel s
Basic knowledge of 0x00 macros
// object-like
#define Macro Name Replace List Line Break
//function-like
#define Macro Name ([Identifier List]) Replaces List Line Break
The replacement list and the identifier list are both lists after tokenizing the string.The difference is that the identifier list is used as a separator between different param ...
Posted by darkerstar on Mon, 16 Dec 2019 18:33:46 -0800