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数据存储组件 · App Inventor 2 中文网
...以设置和运行自己的服务器。 设置服务地址属性和服务端口属性以访问您自己的服务器。
属性
项目编号
获取此云数据库项目的编号。
服务端口
要使用的Redis服务器端口，默认为6381。
服务地址
用于存储数据的Redis...
How do I create a random alpha-numeric string in C++?
I'd like to create a random string, consisting of alpha-numeric characters. I want to be able to be specify the length of the string.
...
When are you supposed to use escape instead of encodeURI / encodeURIComponent?
When encoding a query string to be sent to a web server - when do you use escape() and when do you use encodeURI() or encodeURIComponent() :
...
PHP Array to CSV
...
This is a simple solution that exports an array to csv string:
function array2csv($data, $delimiter = ',', $enclosure = '"', $escape_char = "\\")
{
$f = fopen('php://memory', 'r+');
foreach ($data as $item) {
fputcsv($f, $item, $delimiter, $enclosure, $escape_cha...
Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...线程了：
mysql> SHOW PROCESSLIST;
也可以通过查询刚配置的端口是否已经被MySQL占用来确认是否安装成功：
shell> lsof -i :9998
shell> lsof -i :9999
完活儿！现在你的MySQL已经具备NoSQL的能力了！
实战
首先创建一个测试用的表：
CREA...
Is it possible to have SSL certificate for IP address, not domain name?
...e extension contains an iPAddress, the address MUST be stored in the octet string in "network byte order", as specified in [RFC791]. ... For IP version 4..., the octet string MUST contain exactly four octets." In short, you can't use a subnet in the subjectAltName field
– reg...
Hidden Features of MySQL
...
Binary Protocol:
MySQL 4.1 introduced a binary protocol that allows non-string data values to be sent
and returned in native format without conversion to and from string format. (Very usefull)
Aside, mysql_real_query() is faster than mysql_query() because it does not call strlen()
to opera...
How to sleep for five seconds in a batch file/cmd [duplicate]
...ait for. If the accuracy of the wait time is important (ie a second or two extra delay is not acceptable), you can use this approach:
powershell -command "$sleepUntil = [DateTime]::Parse('%date% %time%').AddSeconds(5); $sleepDuration = $sleepUntil.Subtract((get-date)).TotalMilliseconds; start-sleep...
scanf() leaves the new line char in the buffer
...kip optional white space. Do not use a trailing blank in a scanf() format string.
Note that this still doesn't consume any trailing whitespace left in the input stream, not even to the end of a line, so beware of that if also using getchar() or fgets() on the same input stream. We're just getting...
How to convert an IPv4 address into a integer in C#?
...pping:
using System;
using System.Net;
class App
{
static long ToInt(string addr)
{
// careful of sign extension: convert to uint first;
// unsigned NetworkToHostOrder ought to be provided.
return (long) (uint) IPAddress.NetworkToHostOrder(
(int) IPAddr...