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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
#...
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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MySQL一次主从数据不一致的问题解决过程 - 数据库(内核) - 清泛网 - 专注C/...
... :不检查复制过滤器,建议启用。后面可以用--databases来指定需要检查的数据库。 --no-check-binlog-format : 不检查复制的binlog模式,要是binlog模式是ROW,则会报错。 --replicate-check-only :只显示不同步的信息。 --replicate= :把checks...
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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MFC 中CImageList的用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...产生显露目标DC背景色的透明区域。绘制屏蔽图像时可以指定几种绘图样式。例如,可以指定图像进行抖色处理以指示选定的对象。
使用图像列表
构造CImageList对象,调用其Create函数的一个重载来创建图像列表并将图像列表...
菜单的背景颜色 - C/C++ - 清泛网 - 专注C/C++及内核技术
...“MFC类库详解”中有关参数nFlags的解释如下:
指定屏幕位置标志或鼠标键标志。
屏幕位置标志可以为下列值之一:
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TPM_CENTERALIGN
使弹出菜单在水平方向相对于x指定的坐标居中。
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TPM_LEFTALIG...
How to find serial number of Android device?
...oogle's recommendations, I implemented a class that will generate a unique UUID for each device, using ANDROID_ID as the seed where appropriate, falling back on TelephonyManager.getDeviceId() as necessary, and if that fails, resorting to a randomly generated unique UUID that is persisted across app ...
App Inventor 2 连接打印机(Printer),自定义打印的实现 - App Inventor ...
...”组件将数据分享给网络打印机App,这种实现思路。
蓝牙及串口打印机,需要研究打印机的数据协议(不同品牌协议有差别),暂时不在本文讨论范围。
信息分享器组件介绍
三种分享方式的效果,以邮件App测试为例...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
...;
import java.lang.reflect.Method;
import java.util.List;
import java.util.UUID;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.util.Log;
public class BluetoothConnector {
private BluetoothSocketWra...
