Code: if (navigator.getUserMedia) { navigator.getUserMedia( constraints { video: true, audio: true }, successCallback function (localMediaStream...
firewall, the integrated environment of system Centos7, lnmp.org, does not have the permission to run mysql. Iptables has been restarted. Refresh authorization error: Mysql user:Iptables: New processing: 1. Modify mysql configuration file vi ...
is there a canvas library where the great god has used to draw arrows? needs to draw arrows with width, and the radians can be adjusted . use jtopo to make one that can only draw this kind of ugly arrows, and the radians cannot be adjusted . ...
package main import ( "fmt" ) func f1(in chan int) { fmt.Println(<-in) } func main() { out := make(chan int) out <- 2 go f1(out) } Why does this cause deadlocks? How to solve it? ...
I wrote a html with position in the background of Wechat, but the position attribute was lost in the Synchronize process. only left and top ...
I installed a virtual machine on python. There is a script usually: source ~ env bin activate () python text.py but it s troublesome every time. I want to write a shell or python, but I can t use source in shell and python. According to what...