Seeing this code, I don’t know what this code really means. Who knows? Because the assignment [x,y,x]===[0,0,1], that is to say, the upward direction of the camera is the direction of the z-axis. Simply understood as the rotation angle of the camera.If [x,y,x]===[1,0,0] is assigned, then the camera’s upward direction is the x-axis direction, and ..
Suddenly there was a problem: since most companies began to use the technology of separating front and rear ends. Before the front and back ends are not separated, the page sends an XHR request to the server. After the data or logic processing is requested, the page returns to the browser end and the process ..
1. I want to write an interface for the storage of ring letters and chat records. How do you realize this?2. Where should audio pictures be stored?3. How does Huanxin’s account relate to our users? 3 I know 12 I’m not sure that the ring letter has a special ID. My practice is to use ..
My thinking is <vedio src=’/xx/api’> The back end transmits video file data (binary) to the front end, and then changes the corresponding header.However, I did not succeed in my attempt, and I did not find any relevant information on the Internet.I don’t know what the problem is. Perhaps the desired effect is this http://hc.yinyuetai.com/uploads/videos/common/B7D20154766D39739AF193BCE138419F.flv? sc\u003d0743670c523be875\u0026br\u003d759\u0026vid\u003d2561631\u0026aid\u003d311\u0026area\u003dHT\u0026vst\u003d2 ..
1. datatables plug-in, as shown in the following figure, how to save the current sorting after dragging? 2. How do I get the data of dragging 2 and the data of dragging 5? Datatables have not been used for a long time, recommend one.Chines..
When a field in the database is set to Null, Mobile client will return Null by default. If I want Mobile client to return NULL, I have to make a judgment.1. If I want Mobile client to return empty, how should I set the table field default without judgment?2. Is it better to set default ..
For example, I have four threads in Central Processor, so why doesn’t running a software that can only use a single thread occupy all the resources of the first core, but 25% of each thread? What you want is realizable. This API can be called on different operating systems, sched_setaffinity can be called on linux, ..
[firstname.lastname@example.org]# makemake all-recursivemake: Entering directory `/usr/local/src/mcrypt-2.6.8′Making all in docmake: Entering directory `/usr/local/src/mcrypt-2.6.8/doc’make: Nothing to be done for `all’.make: Leaving directory `/usr/local/src/mcrypt-2.6.8/doc’Making all in srcmake: Entering directory `/usr/local/src/mcrypt-2.6.8/src’gaa -o gaaout.c -i gaa.h mcrypt.gaaMake: gaa: Command not foundmake:*[gaaout.c] error 127make: Leaving directory `/usr/local/src/mcrypt-2.6.8/src’make:*[all-recursive] Error 1make: Leaving directory `/usr/local/src/mcrypt-2.6.8′make:*[all] Error 2 If you are using Ubuntu/Debian system, executesudo ..
If I use ws module to provide a websocket interface, can java playback call normally?What is a good way to implement it?I use node’s http.request to access node’s http. CreateServer is a keep-alive connection. But I don’t know how long it will last, and I don’t know if java can access it. Long connection interaction ..
The function to be realized now is as follows: express is used as the middle layer, the initial data is obtained through node requesting the java interface, and then the page is rendered. After the request of the front-end page is sent to express, it is forwarded to the api of java end and the ..
I now write my own code for several projects, open redis, take data into variables, open mysqli, insert data into the database, and then add this script to cron.I feel that there is a lot of repetitive code in it, so I would like to ask the industry if there are some general and efficient ..
The project needs drag and drop to realize webview page layout, similar to this. There are many controls that can be used. Easyui seems to have, I wonder if it supports mobile pages. Jqueryui also has a touch event if it is used to m..