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Windows、Linux开放指定端口 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Windows、Linux开放指定端口主机某些端口需要提供给外部访问，如MySQL 3306端口、svn 3690端口、WCF绑定端口等等，但一般情况下端口默认是被防火墙拦截禁止外部访问的。本文简要介绍了如何在不关闭防火墙的情况下开放指定端口。...
xunsearch主键重复、搜索结果重复 - 更多技术 - 清泛网 - 专注C/C++及内核技术
xunsearch主键重复、搜索结果重复使用 $xs->index->update(key) 建立新索引时，可能由于缓存没有及时写入服务器主索引，因此重复执行该语句可能就会导致同一记录重复插入
try {
$xs = new XS('itech.so');
$index = ...
Searching for UUIDs in text with regex
I'm searching for UUIDs in blocks of text using a regex. Currently I'm relying on the assumption that all UUIDs will follow a patttern of 8-4-4-4-12 hexadecimal digits.
...
App Inventor 2 试验组件 · App Inventor 2 中文网
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Firebase令牌
获取Firebase访问令牌。
Firebase URL地址
指定 Firebase 的 URL地址。当前默认值是MIT私有 Firebase URL地址，目前选择默认即可。
持久化
如果为 真，则变量在离线且应用程序退出时将保留其值。下次应用程序在连接...
Generate GUID in MySQL for existing Data?
...RE UPDATE on YourTable
FOR EACH ROW
BEGIN
SET new.guid_column := (SELECT UUID());
END
//
Then execute
UPDATE YourTable set guid_column = (SELECT UUID());
And DROP TRIGGER beforeYourTableUpdate;
UPDATE
Another solution that doesn't use triggers, but requires primary key or unique index :
UP...
Generate a UUID on iOS from Swift
In my iOS Swift app I want to generate random UUID ( GUID ) strings for use as a table key, and this snippet appears to work:
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PHP function to generate v4 UUID
...nd I've been trying to piece together a function that generates a valid v4 UUID in PHP. This is the closest I've been able to come. My knowledge in hex, decimal, binary, PHP's bitwise operators and the like is nearly non existant. This function generates a valid v4 UUID up until one area. A v4 UUID ...
自动生成Linux下Makefile全攻略（automake原理） - C/C++ - 清泛网 - 专注C/C++及内核技术
...le文件
2、make 输出二进制
3、make install 安装二进制到指定目录
make及make install的规则都需要参照Makefile文件，而Makefile是自动生成的，大家有兴趣可以查看下Makefile，代码很长很复杂。当然我们可以直接在Makefile文件中写编译...
How to generate unique ID with node.js
...
Install NPM uuid package (sources: https://github.com/kelektiv/node-uuid):
npm install uuid
and use it in your code:
var uuid = require('uuid');
Then create some ids ...
// Generate a v1 (time-based) id
uuid.v1(); // -> '6c84fb...
Python: How to create a unique file name?
...stion was very clear, but if all you need is a unique file name...
import uuid
unique_filename = str(uuid.uuid4())
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