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How do iOS Push Notifications work?
...e those notifications. Each device establishes an accredited and encrypted IP connection with the service and receives notifications over this persistent connection. Providers connect with APNs through a persistent and secure channel while monitoring incoming data intended for their client applicati...
List of Rails Model Types
...stgreSQL, you can take advantage of these:
:hstore
:array
:cidr_address
:ip_address
:mac_address
For UI mapping (Model scaffold data type -> HTML), the next image has all the basic field types:
share
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...
App Inventor 2 中文网原创内容 · App Inventor 2 中文网
...书面许可，不得转载或使用 《隐私政策》《服务协议》 关注公众号，精彩不错过！ #free_v { border:none; position:fixed; top:40%; left:5px; width:200px; height:500px; display: none;}@media screen and (max-width: 700px) { #free_v { top:200%;...
How to get the instance id from within an ec2 instance?
...ce-id
If you need programatic access to the instance ID from within a script,
die() { status=$1; shift; echo "FATAL: $*"; exit $status; }
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`"
An example of a more advanced...
Does IMDB provide an API? [closed]
... (which is in the imdb${searchphrase} format). Alternatively, one could strip or replace the padding via a local proxy.
// 1) Vanilla JavaScript (JSON-P)
function addScript(src) { var s = document.createElement('script'); s.src = src; document.head.appendChild(s); }
window.imdb$foo = function (res...
How do I grab an INI value within a shell script?
...;(grep = file.ini)
Sample file:
[section-a]
var1=value1
var2=value2
IPS=( "1.2.3.4" "1.2.3.5" )
To access variables, you simply printing them: echo $var1. You may also use arrays as shown above (echo ${IPS[@]}).
If you only want a single value just grep for it:
source <(grep var1 file.ini...
Slow Requests on Local Flask Server
...ured it out. It appears to be an issue with Werkzeug and os's that support ipv6.
From the Werkzeug site http://werkzeug.pocoo.org/docs/serving/:
On operating systems that support ipv6 and have it configured such as modern Linux systems, OS X 10.4 or higher as well as Windows Vista some browsers...
REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...，输入正确的用户名和密码进如系统，查看虚拟机获得的IP地址
这个时候系统的网卡默认是没有启动的
输入 ifup eth0 启用网卡 ifconfig
Redhat 初步安装完成。
1.2辅助工具
切换到windows 下准备号SSH工具我的是SecureCRT
输入正...
tcpdump: localhost to localhost [closed]
I write a program that send TCP packets from localhost to localhost. And I want to use tcpdump to capture the packets. But nothing is captured.
My command in Ubuntu:
...
BugTrap程序崩溃快照上传服务端开发配置 - C/C++ - 清泛网 - 专注C/C++及内核技术
...装程序，用于接收客户上传的崩溃包文件。
推荐使用tcp版本的服务端，.net编写的，可自动安装成windows服务：BugTrapServer.zip
（在上面安装后的目录下有这个，这里多加了一个安装脚本；没有安装上面程序的可直接下载这个使...