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How to generate unique ID with node.js
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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...
MFC GDI获取文字的宽度及高度 - C/C++ - 清泛网 - 专注C/C++及内核技术
...DI获取文字的宽度及高度使用CDC的GetTextExtent函数可以获取指定文字的大小,部分代码如下:CDC* pDC = CDC::FromHandle(::GetDC(NULL)); if (pDC) ...使用CDC的GetTextExtent函数可以获取指定文字的大小,部分代码如下:
CDC* pDC = CDC::FromHandle(::...
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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Random string generation with upper case letters and digits
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Simply use Python's builtin uuid:
If UUIDs are okay for your purposes, use the built-in uuid package.
One Line Solution:
import uuid; uuid.uuid4().hex.upper()[0:6]
In Depth Version:
Example:
import uuid
uuid.uuid4() #uuid4 => full random uuid
#...
OnNotify函数 ON_NOTIFY消息总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...用详解了吧)。
当然,也可以通过重载OnNotify函数处理指定控件的指定消息,例如:
BOOL CNotifyDlg::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
NMHDR* hdr=(NMHDR*)lParam;
if( hdr->code==NM_CLICK && hdr->idFrom==IDC_BUTTON1)
{
MessageBox(L"你...
二进制文件的读写 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
...到的二进制文件?读到的二进制文件能否转成列表文件?蓝牙客户端或 ble 都可以接收二进制数组,返回的数据是列表:
如果想要保存二进制到文件,可以考虑转换成 ascii 或 base64 化,然后通过文件管理器保存为文件,具体...
Collisions when generating UUIDs in JavaScript?
... this question . I am using the code below from this answer to generate UUID in JavaScript:
6 Answers
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Wi-Fi 是什么的缩写 - 创意 - 清泛网 - 专注C/C++及内核技术
...写请对照上图自测。如果你是 Level 0,阅读本文前建议先搜索并查看相关资料学习 Wi-Fi 的基本概念,本文将不涉及定义或技术上的解释。Wi-...
请对照上图自测。如果你是 Level 0,阅读本文前建议先搜索并查看相关资料学习 Wi-Fi ...
How do you create a random string that's suitable for a session ID in PostgreSQL?
... years old. Check out this for a totally different method using gen_random_uuid(): faster, more randomness, more efficiently stored in the database.
– Evan Carroll
Jan 12 '17 at 8:11
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Generating Guids in Ruby
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As of Ruby 1.9, uuid generation is built-in. Use the SecureRandom.uuid function.
For example:
require 'securerandom'
SecureRandom.uuid # => "96b0a57c-d9ae-453f-b56f-3b154eb10cda"
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