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Is it possible to ping a server from Javascript?
... on other parts of the source but you get the idea).
function Pinger_ping(ip, callback) {
if(!this.inUse) {
this.inUse = true;
this.callback = callback
this.ip = ip;
var _that = this;
this.img = new Image();
this.img.onload = function() {_that.good();};
this.img.o...
App Inventor 2 UDP网络通信教程 - 发送和接收UDP数据包 · App Inventor 2 中文网
... IoT 参考文档 技术和其他指南 中文网原创 VIP 专享 App教程 入门必读 App上架指南 特色 AI 助手 · 一句话生成 App 鸿蒙 · 一套积木，多端原生打包！ 下载 AI2伴侣 · 安卓/鸿蒙/iO...
从网购到火车票，对比淘宝12306网为何如此烂？ - 大数据 & AI - 清泛网 - ...
...(TDDL);五异步通信(Notify);六非结构化数据存储(TFS,NOSQL);七监控、预警系统;八配置统一管理。(摘自：《淘宝网采用什么技术架构来实现网站高负载的》)
2. 12306网站被人诟病
淘宝强大的技术实力，很容易让人们联想到让...
How do I get a list of all subdomains of a domain? [closed]
...ns1.foo.bar in your example) is configured to allow AXFR requests from the IP you're using; this is unlikely, unless your IP is configured as a secondary for the domain in question.
Basically, there's no easy way to do it if you're not allowed to use axfr. This is intentional, so the only way arou...
rgdal package installation
...nswered Aug 17 '14 at 21:44
François PelletierFrançois Pelletier
18311 silver badge77 bronze badges
...
How to split a string and assign it to variables
...trings"
)
func main() {
s := strings.Split("127.0.0.1:5432", ":")
ip, port := s[0], s[1]
fmt.Println(ip, port)
}
Output:
127.0.0.1 5432
One step, for example,
package main
import (
"fmt"
"net"
)
func main() {
host, port, err := net.SplitHostPort("127.0.0.1:5432")
...
Deep copying an NSArray
...answered Mar 15 '09 at 9:18
François P.François P.
5,11644 gold badges2929 silver badges3131 bronze badges
...
How to swap two variables in JavaScript
...
@FrançoisWahl Good point. I think most of the answers here will work and are fairly equivalent. I suppose it's a trade off between temporary variable use, amount of code, and speed.
– showdev
...
json_encode is returning NULL?
...having the same problem here. I had values with non-utf8 chars like "Validação de Formulários". I know this question is a little bit old now, but that's the awesomeness of internet!!
– fabio
Feb 11 '11 at 23:23
...
Assign output to variable in Bash
... you don't put a $ in front of a variable you're assigning. You only use $IP when you're referring to the variable.
#!/bin/bash
IP=$(curl automation.whatismyip.com/n09230945.asp)
echo "$IP"
sed "s/IP/$IP/" nsupdate.txt | nsupdate
...