举一个具体的例子:我们想要校验数据库中两张表的数据是否一致,表中的行可能是无序的,于是我们可以将一张表视作是一个Set<ROW>,我们的目标是找到一种方法,来对一张表计算出一个hash值(check sum),通过比较两张表的两个checksum来确定数据的一致性。 目标 设计一种算法,对于两个元素相同的Set计算出相同的哈希...
Keyloggers, tools designed to record keystrokes on a device, come in both software and hardware varieties. Hardware keyloggers resemble USB drives and function by being directly connected to a computer. They must remain attached for as long as needed to complete their task. These devices have buil...
32 bit app - how to get 'C:\program files" directory using "Environment.GetFolderPath" 32 bit Application calling 32 bit DLL "An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)" 4 digit precision- String format 405 method not allowed(post...
I have a project that I released as a .exe. However, I can't run it in VS2017 because of this error: Severity Code Description Project File Line Suppression State Error An error occurred while signing: Failed to sign bin\Release\app.publish\SQLSvrDETool_OOP.exe. SignTool Error: No cer...
Add digits to the end of a number. Steps: Select the data range. Here,C5:C10. In theHometab >> go toCells. InFormat>> choose theFormat Cellscommand. In theFormat Cellsdialog box: Choose theNumbercommand. SelectCustom. Enteryour digits with aHashtag (#)at thebeginning. We used#15. ...
Stacking technology virtualizes multiple stacking-capable devices into a logical device. You can manage and use these devices as a single device. Stacking allows you to expand the number of ports and the switching capacity by adding devices. In addition, the device reliability is improved because ...
To run the entire network I need half as many hosts as I need guests. Had I built this with separate routers I would have needed three laptops (or one more than I'd ever want to carry). To that end, the Web server and DMZ DC are both serving as routers to reduce the number of...
What does it mean for a Twitter hashtag to become “trending?” Twitter trends can be found in found on the “What’s happening” sidebar on desktop, or the search tab on mobile, and show the topics that are currently picking up momentum and driving the conversation on Twitter. These top...
This tutorial shows you how to make cannabis dry ice hash at home! Here’s a closeup of homemade cannabis dry ice hash made using this tutorial. Quick overview: You first mix the weed and dry ice vigorously in a bucket, then pour the mixture into specialized bubble bags (the bottom has...
id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys user@host's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'user@host'" and check to make sure that only the key(s) you wanted were added...