Broccoli's Dev

OneSaw a case in C++ primerplus Chapter 6 Branching Statements, 12345678910111213141516171819202122232425262728293031 char ch; cout << "Typr , and I shell repeat.\n"; cin.get(ch); while (ch != '.') { if (ch == '\n') cout << ch; else cout << ch +1; cin.get(ch); } cout << "\n Please excuse thr slight confusion.\n";``` When we replace `cout<<ch+1` with `cout<<++ch`, two different results appear:- ch+1![...

一C++ primerplus第六章分支语句是看到一个案例, 1234567891011121314151617181920212223242526272829 char ch; cout << "Typr , and I shell repeat.\n"; cin.get(ch); while (ch != '.') { if (ch == '\n') cout << ch; else cout << ch +1; cin.get(ch); } cout << "\n Please excuse thr slight confusion.\n";``` 其中我们将``cout<<ch+1``替换为``cout<<++ch``之后会出现两个不同的- ch+1![ch+1](https://cdn.bimath.com/blog/pg/d46311f0bbc55550d0a106a24e1eee3...

select column_name from information_schema.COLUMNS where table_schema='recheck_model' and table_name = 'problem_model';Call the columns view in information_schema, use where statement to specify your database and data table name.

select column_name from information_schema.`COLUMNS` where table_schema='recheck_model' and table_name = 'problem_model';调用information_schema中的columns视图，使用where语句将自己的数据库和数据表的名称

找到大佬在解决vs2017的问题，发现这是mysql本身的bug，需要安装特定版本的mysql-connect-net和mysql-connect-net解决方案

Found big shot solving vs2017 problem, found this is bug of mysql itself, need to install specific version of mysql-connect-net and mysql-connect-netSolution

视图(view)通过对视图的使用，我们可以将多个表的待使用项串联成一个虚拟表，通过对虚拟表的调用，可以节省语句的复杂程度。CREATE VIEW view 创建视图DROP VIEW view 删除视图如果需要更新视图，可以先进行删除然后新建也可以使用CREATE OR REPLACE VIEW view进行更新，语句的意思是如果有同名称则覆盖没有则创建一个虚拟表格。我们在使用视图时，应该避免创建过多的视图联结，在使用多个视图联结是需要测试一下运行时间code： 123456789drop view generalview;create view generalview asselect p1.aeu_name,p2.geu_name,p3.sgeu_name,p3.sgeu_idfrom allerrorunits as p1,generalerrorunits as p2,subgeneralerrorunits as p3where p1.aeu_id = p2.geu_aeu_id and p2.geu_id = p3.sgeu_geu_id;select *from g...

ViewBy using views, we can string together items to be used from multiple tables into a virtual table. Calling the virtual table can simplify the complexity of statements.CREATE VIEW view Create viewDROP VIEW view Drop viewIf you need to update a view, you can delete it first and then create it anew, or use CREATE OR REPLACE VIEW view to update it. The statement means if a view with the same name exists, overwrite it; otherwise, create a virtual table.When using views, we should avoid creatin...

*一定要用管理员身份运行，不然会出现 object already exits的问题* 将文件名称修改为Web.config，启动命令行工具工具->命令行输入aspnet_regiis -pef "**目标字符串**" " **目标地址(e:\)** 之后将Web.config修改回App.config即可访问在我们访问时需要ConfigurationManager类，使用VS快捷键ctrl+.使用nuget进行快速布置 https://blog.csdn.net/u011981242/article/details/51090487

Be sure to run as administrator, otherwise the object already exits problem will occur. Change the file name to Web.config, start the command line tool Tools -> Command Line, enter aspnet_regiis -pef "**Target String**" " **Target Address(e:\)** . Afterward, change Web.config back to App.config and it can be accessed.We need the ConfigurationManager class when accessing. Use VS shortcut ctrl+. to use NuGet for quick deployment. https://blog.csdn.net/u011981242/article/detail...

Idea I read many blogs using local and server XML documents for updates, so I wondered if this could be done using a database.The basic idea is consistent with the general way. There will be a local XML file recording version number, update time, and local software address info. xml1234567891011<?xml version="1.0" encoding="utf-8" ?><AutoUpDater> <URLAdres url =""/> <UpdateInfo> <UpdateTime Date="2020-05-20"/> <...

思路 看了许多博客是利用本地和服务器的xml文档进行更新，便想着能不能用数据库完成这个操作基本思路与一般的方式一直，本地会有一个xml文件里面记录版本号更新时间软件本地地址信息 xml1234567891011<?xml version="1.0" encoding="utf-8" ?><AutoUpDater> <URLAdres url =""/> <UpdateInfo> <UpdateTime Date="2020-05-20"/> <Version Num="1.0.1"/> </UpdateInfo> <FilePath> <Path Str="E:\Visual Studio 2019 Project\ConsoleApp\ConsoleApp"/> </FilePath></AutoUpDat...

Reference Article: C# How to compare version numbersIn C#, there is a Version class that can be used to compare version numbers.

参照文章:C# 如何比较版本号大小在c#中有version类可以进行版本号的比较

今天使用新建用户访问云服务器的mysql发现一只报错并且只能访问infomation_schema数据库，按照博客上的办法输入指令grant all privileges on test_db.* to testuser@localhost identified by "123456" mysql一直报错一直按照博客上面进行赋予权限在报错，感觉应该是版本不一致导致的命令改变。果然，我在refman-8.0-en的说明文档中找到了这个命令由于刚接触mysql所以大部分依赖于博客和baidu，其实应该将这些查询办法与说明文档进行对照，不能一昧的相信单一解决办法导致把宝贵的工作时间浪费在无意义的debug中。

Today, using a new user to access the mysql of the cloud server, I found that an error was reported and I could only access the infomation_schema database. Following the method on the blog to enter the command grant all privileges on test_db.* to testuser@localhost identified by "123456", mysql kept reporting errors.I have been following the blog to grant permissions but it reports errors. I feel it should be due to version inconsistency causing command changes.Sure enough, I found ...

Since the mysql I installed is 8.0.20 and the installed c++ is 2015, it should be the version inconsistency that causes the missing vcruntime140_1.dll file every time retrieving. You can download the 2015-2019 version for dll update through link.

由于我安装的是mysql8.0.20安装的c++是2015应该是版本不一致导致每次检索都会出现缺少vcruntime140_1.dll文件，可以通过链接下载2015-2019版进行dll的更新

@[TOC](Table of Contents) Use NSIS to Create Revit Plugin InstallerDownloadNSIS DOWNLOADHM NSIS Addin File==We need to store the addin file separately==Just place it after the section reading the file Modify Script File Add automatic modification of addin file path 1234567891011 Section change StrCpy $1 "<Assembly>" StrCpy $1 "$1$INSTDIR" StrCpy $1 "$1\bin\De··bug\Panel.dll</Assembly>" Push <Assembly>name.dll</Assembly&g...

@TOC 使用NSIS制作revit插件安装包下载NSIS DOWNLOADHM NSIS Addin文件==我们需要将addin文件进行单独存放==位置放在读取文件的section后就可 修改脚本文件 增加对addin文件的路径自动修改 1234567891011 Section change StrCpy $1 "<Assembly>" StrCpy $1 "$1$INSTDIR" StrCpy $1 "$1\bin\De··bug\Panel.dll</Assembly>" Push <Assembly>name.dll</Assembly> #text to be replaced Push $1 #replace with Push all #replace all occurrences Push all #replace all occurrences Push C:\ProgramData\Autodesk\Rev...