09 2022 档案

摘要:Implementing Google Analytics on an ASP.NET website Google Analytics is a service offered by Google that generates detailed statistics about a website 阅读全文
posted @ 2022-09-29 10:32 ChuckLu 阅读(19) 评论(0) 推荐(0) 编辑
摘要:error CS8773: "Feature 'global using directive' is not available in C# 9.0" after downgrade from net6.0 to net5.0 回答1 remove <ImplicitUsings>enable</I 阅读全文
posted @ 2022-09-28 17:35 ChuckLu 阅读(348) 评论(0) 推荐(0) 编辑
摘要:Using the .NET CLI to restore packages from a private NuGet feed error NU1301: Unable to load the service index for source @tim_deschryver All posts F 阅读全文
posted @ 2022-09-27 12:00 ChuckLu 阅读(166) 评论(0) 推荐(0) 编辑
摘要:Nuget connection attempt failed "Unable to load the service index for source" 回答1 Deleting %AppData%\Roaming\NuGet\NuGet.Config and restarting VS2019 阅读全文
posted @ 2022-09-27 11:34 ChuckLu 阅读(145) 评论(0) 推荐(0) 编辑
摘要:Where is the global yarn config file? C:\Users\clu\.yarnrc ~/.yarnrc? :) Self signed certificate in certificate chain error yarn config set strict-ssl 阅读全文
posted @ 2022-09-27 11:13 ChuckLu 阅读(27) 评论(0) 推荐(0) 编辑
摘要:Get started with NuGet packages in Azure Artifacts Download NuGet packages 1. Get the feed's source URL From within your project, select Artifacts, an 阅读全文
posted @ 2022-09-27 10:19 ChuckLu 阅读(11) 评论(0) 推荐(0) 编辑
摘要:On the usage of Google Analytics: are you violating the GDPR? In February 2022, the French data protection authority, the CNIL, in cooperation with it 阅读全文
posted @ 2022-09-27 10:09 ChuckLu 阅读(27) 评论(0) 推荐(0) 编辑
摘要:python中round函数的一个小坑——奇进偶弃 >>> round(3.1415,3)3.142>>> round(4.1415,3)4.141 >>> round(10.5)10>>> round(11.5)12 C#中也有类似的设计 https://learn.microsoft.com/e 阅读全文
posted @ 2022-09-24 09:16 ChuckLu 阅读(167) 评论(2) 推荐(0) 编辑
摘要:Why is exponentiation applied right to left? 回答1 The ** operator follows normal mathematical conventions; it is right-associative: In the usual comput 阅读全文
posted @ 2022-09-24 02:53 ChuckLu 阅读(20) 评论(0) 推荐(0) 编辑
摘要:Python Operator Precedence – Learn how to perform operations in Python here are many different types of operators. When evaluating complex expressions 阅读全文
posted @ 2022-09-24 02:51 ChuckLu 阅读(34) 评论(0) 推荐(0) 编辑
摘要:What do these operators mean (** , ^ , %, //)? [closed] 回答1 **: exponentiation 指数 ^: exclusive-or (bitwise) 异或 %: modulus //: divide with integral res 阅读全文
posted @ 2022-09-24 01:07 ChuckLu 阅读(21) 评论(0) 推荐(0) 编辑
摘要:https://docs.python.org/3/library/sys.html#sys.int_info sys.int_info A named tuple that holds information about Python’s internal representation of in 阅读全文
posted @ 2022-09-24 00:57 ChuckLu 阅读(81) 评论(0) 推荐(0) 编辑
摘要:Difference between npm and yarn NPM and Yarn are package managers that help to manage a project’s dependencies. A dependency is, as it sounds, somethi 阅读全文
posted @ 2022-09-23 17:35 ChuckLu 阅读(10) 评论(0) 推荐(0) 编辑
摘要:could not find a part GeneratedMSBuildEditorConfig.editorconfig I have the same issue, but I was able to fix it by enabling "long path support" in Win 阅读全文
posted @ 2022-09-23 17:21 ChuckLu 阅读(2413) 评论(0) 推荐(0) 编辑
摘要:Weierstrass Substitution The Weierstrass substitution, named after German mathematician Karl Weierstrass (1815−1897), is used for converting rational 阅读全文
posted @ 2022-09-23 12:49 ChuckLu 阅读(408) 评论(0) 推荐(0) 编辑
摘要:Why is git submodule not updated automatically on git checkout? When switching branches with git checkout I would assume that most of the time you wou 阅读全文
posted @ 2022-09-23 10:27 ChuckLu 阅读(71) 评论(0) 推荐(0) 编辑
摘要:These 30 keyboard shortcuts are guaranteed to save you time in After Effects. https://www.logickeyboard.com/shortcut/AECC2017.html 阅读全文
posted @ 2022-09-22 03:41 ChuckLu 阅读(17) 评论(0) 推荐(0) 编辑
摘要:修改自动保存配置 编辑-->首选项-->常规。自动保存,间隔改为5分钟。然后还有一个默认的保存路径,默认是项目旁边。 如何导入素材以及新建合成 新建合成如下 另外还有一种是根据素材来新建合成 多种方式导入素材 1.文件-->导入-->文件 导入jpg文件的时候,需要把importerJPEG 序列这 阅读全文
posted @ 2022-09-20 20:29 ChuckLu 阅读(257) 评论(0) 推荐(0) 编辑
摘要:How to make a dropdown list of all cultures (but no repeats) I'm trying to make 2 dropdown lists. The top one offers all cultures, (but no repeats). E 阅读全文
posted @ 2022-09-20 13:31 ChuckLu 阅读(17) 评论(0) 推荐(0) 编辑
摘要:Workshop: Definition, Benefits, and Its Purpose for Individuals Holding a workshop is one of the company’s efforts in improving the skills and abiliti 阅读全文
posted @ 2022-09-20 11:56 ChuckLu 阅读(74) 评论(0) 推荐(0) 编辑
摘要:Twitter and Facebook and YouTube lose; the First Amendment wins A federal appellate court just blew up the absurd argument that the world's largest ca 阅读全文
posted @ 2022-09-20 11:51 ChuckLu 阅读(1) 评论(0) 推荐(0) 编辑
摘要:How To Bind a Combobox to a Dictionary in WPF C# 回答1 Use a Dictionary<Answer,string> (no need for another class) AnswerDisplay = new Dictionary<Answer 阅读全文
posted @ 2022-09-19 18:33 ChuckLu 阅读(131) 评论(0) 推荐(0) 编辑
摘要:WPF DataBinding: Nullable Int still gets a validation error? I have a textbox databound to a nullable int through code. If I erase the data from the t 阅读全文
posted @ 2022-09-19 17:07 ChuckLu 阅读(32) 评论(0) 推荐(0) 编辑
摘要:米象,俗称蛘子,归属鞘翅目象虫科,是贮藏谷物的主要害虫。成虫啮食谷粒,幼虫蛀食谷粒内部。危害米、稻、麦、玉米、高粱等。 米象,是米谷中的小黑甲虫 [rice weevil],俗称蛘子。学名 Sitophilus oryzae Linne。主要寄主在玉米、稻米、小麦、高粱、面粉、等各种贮藏的谷物中。木 阅读全文
posted @ 2022-09-18 01:08 ChuckLu 阅读(238) 评论(0) 推荐(0) 编辑
摘要:what does bad color sequence mean in python turtle? 评论 Run screen.colormode(255) and it should work. – Blender May 27, 2013 at 18:00 回答1 From the docs 阅读全文
posted @ 2022-09-17 19:17 ChuckLu 阅读(63) 评论(0) 推荐(0) 编辑
摘要:How do I get a list of locally installed Python modules? How do I get a list of Python modules installed on my computer? 评论 you can just do >>>help() 阅读全文
posted @ 2022-09-17 18:17 ChuckLu 阅读(18) 评论(0) 推荐(0) 编辑
摘要:我擦,开始菜单调出来的python,是在 "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\python.exe" 打开vs的安装包,然后把Python环境那个去掉。 查看Python命令行所在的路径 >>> imp 阅读全文
posted @ 2022-09-17 18:06 ChuckLu 阅读(328) 评论(0) 推荐(0) 编辑
摘要:Generate random colors (RGB) I just picked up image processing in python this past week at the suggestion of a friend to generate patterns of random c 阅读全文
posted @ 2022-09-17 18:04 ChuckLu 阅读(52) 评论(0) 推荐(0) 编辑
摘要:Why does Python's eval(input("Enter input: ")) change input's datatype? 问题 In Python 3, I write a simple command to accept an integer input from the u 阅读全文
posted @ 2022-09-17 17:26 ChuckLu 阅读(13) 评论(0) 推荐(0) 编辑
摘要:Behaviour of increment and decrement operators in Python How do I use pre-increment/decrement operators (++, --), just like in C++? Why does ++count r 阅读全文
posted @ 2022-09-17 16:16 ChuckLu 阅读(13) 评论(0) 推荐(0) 编辑
摘要:Python, move turtle to relative coordinates 回答1 Simply get current position, change it and move to it turtle.goto( turtle.pos() + (15,-15) ) 阅读全文
posted @ 2022-09-17 15:51 ChuckLu 阅读(16) 评论(0) 推荐(0) 编辑
摘要:计算机网络原理第一篇 第一章:- 1.1 计算机网络在信息时代中的作用。21世纪的一些重要特征是。。数字化。网络化。和信息化,他是一个以。。网络为核心的信息时代。。网络现在已经成为信息社会的命脉和发展知识经济的重要基础。。大众所熟知的三大类网络有:1、电信网络:提供电话、电报、及传真等服务;2、有线 阅读全文
posted @ 2022-09-17 15:34 ChuckLu 阅读(124) 评论(0) 推荐(0) 编辑
摘要:Network Access Point (NAP) Definition of Network Access Point (NAP) in The Network Encyclopedia. What is NAP (Network Access Point)? NAP stands for Ne 阅读全文
posted @ 2022-09-17 14:58 ChuckLu 阅读(85) 评论(0) 推荐(0) 编辑
摘要:why does abs() function works for the position coordinate in Python? I am looking at the Python document for turtle graphics, it has an example on dra 阅读全文
posted @ 2022-09-17 14:07 ChuckLu 阅读(34) 评论(0) 推荐(0) 编辑
摘要:Visual Studio Code is not showing the ouput of Python 回答1 Using the Python Extension Run/Debug commands Notes I recommend reviewing the official Visua 阅读全文
posted @ 2022-09-17 11:02 ChuckLu 阅读(15) 评论(0) 推荐(0) 编辑
摘要:<div>是块级元素 <span>是内联元素 Block versus inline elements There are two important categories of elements to know in HTML: block-level elements and inline el 阅读全文
posted @ 2022-09-17 10:48 ChuckLu 阅读(70) 评论(0) 推荐(0) 编辑
摘要:AttributeError: module 'datetime' has no attribute 'now' I am learning Python on my own. Now I have encountered some problems. Below is my code which 阅读全文
posted @ 2022-09-17 10:44 ChuckLu 阅读(569) 评论(0) 推荐(0) 编辑
摘要:使用像 CodePen 这样基于 Web 的集成开发环境 有许多 web 应用能够仿真一个网站开发环境。你可以在这种应用——通常只有一个标签页——里输入 HTML、CSS 和 JavaScript 代码然后像显示网页一样显示代码的结果。通常这些工具都很简单,对学习很有帮助,而且至少有免费的基本功能, 阅读全文
posted @ 2022-09-17 10:35 ChuckLu 阅读(50) 评论(0) 推荐(0) 编辑
摘要:How to clear the interpreter console? 回答1 As you mentioned, you can do a system call: For Windows: >>> import os >>> clear = lambda: os.system('cls') 阅读全文
posted @ 2022-09-17 10:23 ChuckLu 阅读(14) 评论(0) 推荐(0) 编辑
摘要:直接打开Python app,出现命令行 turtle.home() 打开面板 turtle.position() 查看当前位置 turtle.heading() 查看当前方向 https://docs.python.org/3/library/turtle.html https://docs.py 阅读全文
posted @ 2022-09-17 10:16 ChuckLu 阅读(121) 评论(0) 推荐(0) 编辑
摘要:What does end=' ' exactly do? So, I'm struggling trying to understand this kinda simple exercise def a(n): for i in range(n): for j in range(n): if i 阅读全文
posted @ 2022-09-17 10:07 ChuckLu 阅读(10) 评论(0) 推荐(0) 编辑
摘要:不用中间变量交换 a ,b(三种方法) 1、加减法:该方法可以交换整型和浮点型数值的变量,但在处理浮点型的时候有可能出现精度的损失 a = a + b; b = a - b; a = a - b; 2、异或法:可以完成对整型变量的交换,对于浮点型变量它无法完成交换。 a = a^b; b = a^b 阅读全文
posted @ 2022-09-17 09:30 ChuckLu 阅读(126) 评论(0) 推荐(0) 编辑
摘要:eval('123')+eval('456') eval('123'+'456') '123'+'456' 123+456 eval('print(12)') 阅读全文
posted @ 2022-09-17 09:07 ChuckLu 阅读(13) 评论(0) 推荐(0) 编辑
摘要:Please stop citing TIOBE What is TIOBE? The TIOBE Programming Community index is an indicator of the popularity of programming languages. The index is 阅读全文
posted @ 2022-09-17 00:38 ChuckLu 阅读(16) 评论(0) 推荐(0) 编辑
摘要:ComboBox- SelectionChanged event has old value, not new value 回答1 According to MSDN, e.AddedItems: Gets a list that contains the items that were selec 阅读全文
posted @ 2022-09-16 16:31 ChuckLu 阅读(59) 评论(0) 推荐(0) 编辑
摘要:How do you handle a ComboBox SelectionChanged in MVVM? For those doing pure MVVM, how do you handle a ComboBox SelectionChanged event without revertin 阅读全文
posted @ 2022-09-16 16:03 ChuckLu 阅读(217) 评论(0) 推荐(0) 编辑
摘要:How to delete an object by id with entity framework It seems to me that I have to retrieve an object before I delete it with entity framework like bel 阅读全文
posted @ 2022-09-15 13:59 ChuckLu 阅读(14) 评论(0) 推荐(0) 编辑
摘要:Like Operator in Entity Framework? 回答1 This is an old post now, but for anyone looking for the answer, this link should help. Go to this answer if you 阅读全文
posted @ 2022-09-15 10:52 ChuckLu 阅读(20) 评论(0) 推荐(0) 编辑
摘要:https://www.sqlservercentral.com/forums/topic/charindex-is-not-case-sensitive SELECT CHARINDEX('x', 'X') 这个不区分大小写 下面这个会区分大小写 SELECT CHARINDEX('x' coll 阅读全文
posted @ 2022-09-14 18:08 ChuckLu 阅读(14) 评论(0) 推荐(0) 编辑
摘要:What do two question marks together mean in C#? Ran across this line of code: FormsAuth = formsAuth ?? new FormsAuthenticationWrapper(); What do the t 阅读全文
posted @ 2022-09-14 14:29 ChuckLu 阅读(13) 评论(0) 推荐(0) 编辑
摘要:How to change your Twitter username Your username –– also known as your handle –– begins with the “@” symbol, is unique to your account, and appears i 阅读全文
posted @ 2022-09-14 02:44 ChuckLu 阅读(122) 评论(0) 推荐(0) 编辑
摘要:Extend IQueryable<T> Where() as OR instead of AND relationship 回答2 Use PredicateBuilder<T>. It's probably what you want. Dynamically Composing Express 阅读全文
posted @ 2022-09-13 15:23 ChuckLu 阅读(28) 评论(0) 推荐(0) 编辑
摘要:一道微分方程应用题中的“微”妙解答 首先,设导弹的位置为 (x,y) ,由简单的物理及几何知识我们可以列出以下微分方程组 然后......然后怎么解呢? 我们发现这是一个关于 、、x、y、t 的三元微分方程组,这是符合实际的,由于 、x、y 都分别是 t 的函数,我们只需要分别解出 、x、y 关于  阅读全文
posted @ 2022-09-12 17:09 ChuckLu 阅读(64) 评论(0) 推荐(0) 编辑
摘要:WPF binding not updating the view 回答1 You need to implement INotifyPropertyChanged in your ViewModel order to notify the View that the property has ch 阅读全文
posted @ 2022-09-09 17:18 ChuckLu 阅读(27) 评论(0) 推荐(0) 编辑
该文被密码保护。
posted @ 2022-09-08 23:38 ChuckLu 阅读(0) 评论(0) 推荐(0) 编辑
摘要:Cannot convert from an IEnumerable<T> to an ICollection<T> I have defined the following: public ICollection<Item> Items { get; set; } When I run this 阅读全文
posted @ 2022-09-08 15:24 ChuckLu 阅读(26) 评论(0) 推荐(0) 编辑
摘要:How can I add an item to a IEnumerable<T> collection? My question as title above. For example IEnumerable<T> items = new T[]{new T("msg")}; items.ToLi 阅读全文
posted @ 2022-09-08 15:20 ChuckLu 阅读(468) 评论(0) 推荐(0) 编辑
摘要:What are the Navigation Properties in Entity Framework 回答1 Navigation properties represents related entites to the principal entity. Foreign Keys are 阅读全文
posted @ 2022-09-08 10:27 ChuckLu 阅读(26) 评论(0) 推荐(0) 编辑
摘要:Why Navigation Properties are virtual by default in EF I have following POCO class being used in EF 6.x. My question: Why is the navigation property o 阅读全文
posted @ 2022-09-08 10:22 ChuckLu 阅读(212) 评论(0) 推荐(0) 编辑
摘要:Do Visual Studio Database Project *.refactorlog Files Belong in Source Control? 问题 I am using git (via GitHub for Windows) and I am using the latest . 阅读全文
posted @ 2022-09-08 09:41 ChuckLu 阅读(25) 评论(0) 推荐(0) 编辑
摘要:数学一李永乐660 132题 分母和差化积,分子1-cosx的等价无穷小是二分之一的x^2。 https://www.symbolab.com/solver/limit-calculator/%5Clim_%7Bx%5Cto0%7D%5Cleft(%5Cfrac%7Bcos%5Cleft(sinx% 阅读全文
posted @ 2022-09-07 15:46 ChuckLu 阅读(25) 评论(0) 推荐(0) 编辑
摘要:Is there a quick way to find all columns in SQL Server 2008 R2 that are encrypted/have encrypted data? SELECT t.name AS [Table], c.name AS [Column], c 阅读全文
posted @ 2022-09-07 14:29 ChuckLu 阅读(18) 评论(0) 推荐(0) 编辑
摘要:久留木玲|生活总是如此艰辛吗,还是只有童年才如此 阿尔弗雷德说“幸运的人一生都被童年治愈;不幸的人一生都在治愈童年。” Psychologist Alfred Adler said, Unfortunate people are healing their childhood all their l 阅读全文
posted @ 2022-09-07 00:53 ChuckLu 阅读(1142) 评论(0) 推荐(0) 编辑
摘要:"Search Solution Explorer" doesn't work properly in VS 2022 Thank you for sharing your feedback! There are two things that need to be clarified: Make 阅读全文
posted @ 2022-09-06 10:48 ChuckLu 阅读(19) 评论(0) 推荐(0) 编辑
摘要:Docs > WPF Controls > Controls and Libraries > Data Grid > Filtering and Searching > Filter Editor The Filter Editor allows users to build complex fil 阅读全文
posted @ 2022-09-05 18:00 ChuckLu 阅读(28) 评论(0) 推荐(0) 编辑
摘要:关于反三角函数及其导数 三角函数和反三角函数,在几何意义上,是x和y互换。 三角函数里面,自变量x是角度,y是三角函数对x的运算结果。 反三角函数里面,自变量x是针对某个角度y做三角函数得到的结果。现在是反过来,根据结果来求角度y。 原文还有导数公式的推导过程。 阅读全文
posted @ 2022-09-05 00:13 ChuckLu 阅读(384) 评论(0) 推荐(0) 编辑
摘要:Derivative of Arcsecant Function 证明 Also see Derivative of Arcsine Function Derivative of Arccosine Function Derivative of Arctangent Function Derivat 阅读全文
posted @ 2022-09-05 00:06 ChuckLu 阅读(55) 评论(0) 推荐(0) 编辑
摘要:14个基本初等函数的导数。 https://www.cnblogs.com/chucklu/p/16656627.html 阅读全文
posted @ 2022-09-04 00:01 ChuckLu 阅读(271) 评论(0) 推荐(0) 编辑
摘要:pip 使用国内镜像源 查看 镜像地址: $ pip3 config list global.index-url='https://pypi.tuna.tsinghua.edu.cn/simple' install.trusted-host='https://pypi.tuna.tsinghua.e 阅读全文
posted @ 2022-09-03 16:30 ChuckLu 阅读(246) 评论(0) 推荐(0) 编辑
摘要:下载 https://www.weidown.com/shipinchuli/19645.html Your subscription entitles you to chinese simplified product versions. Your subscription entitles yo 阅读全文
posted @ 2022-09-03 16:13 ChuckLu 阅读(809) 评论(0) 推荐(0) 编辑
摘要:A computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols o 阅读全文
posted @ 2022-09-03 15:26 ChuckLu 阅读(70) 评论(0) 推荐(0) 编辑
摘要:免费使用,不用破解,创意设计全家桶24款开源软件推荐 AfterEffects https://www.weidown.com/shipinchuli/19645.html Natron Natron是免费的开源视频合成软件(GPL v2许可证),其功能类似于Adobe After Effects。 阅读全文
posted @ 2022-09-03 13:06 ChuckLu 阅读(227) 评论(0) 推荐(0) 编辑
摘要:Does VS code have variable explorer object like we have it in spyder? Open your .py script in vscode Right click anywhere on the script > Run current 阅读全文
posted @ 2022-09-03 11:53 ChuckLu 阅读(782) 评论(0) 推荐(0) 编辑
摘要:Problem with input() in Spyder 5.1.5 (Anaconda) 错误提示 Traceback (most recent call last): File "C:\Users\clu\Anaconda3\lib\site-packages\qtconsole\base_ 阅读全文
posted @ 2022-09-03 10:45 ChuckLu 阅读(529) 评论(0) 推荐(0) 编辑
摘要:https://docs.continuum.io/anaconda/install/windows/ https://repo.anaconda.com/archive/Anaconda3-2022.05-Windows-x86_64.exe https://jupyter.org/try-jup 阅读全文
posted @ 2022-09-03 09:34 ChuckLu 阅读(57) 评论(0) 推荐(0) 编辑
摘要:Anaconda (Python distribution) Anaconda is a distribution of the Python and R programming languages for scientific computing (data science, machine le 阅读全文
posted @ 2022-09-03 09:20 ChuckLu 阅读(143) 评论(0) 推荐(0) 编辑
摘要:Compiler vs Interpreter Compiler and Interpreter are two different ways to translate a program from programming or scripting language to machine langu 阅读全文
posted @ 2022-09-03 09:03 ChuckLu 阅读(24) 评论(0) 推荐(0) 编辑
摘要:Difference between Compiled and Interpreted Language Prerequisite – Compiler vs Interpreter Compiled Language:A compiled language is a programming lan 阅读全文
posted @ 2022-09-03 08:58 ChuckLu 阅读(44) 评论(0) 推荐(0) 编辑
摘要:https://www.integral-calculator.com/ https://www.bilibili.com/video/BV13T4y1E7km?p=39 例11,视频42:00开始的 上面的结果,可以写成。用到了对数公式的第二个和第四个公式 阅读全文
posted @ 2022-09-02 17:50 ChuckLu 阅读(27) 评论(0) 推荐(0) 编辑
摘要:Integral Calculator Calculate integrals online — with steps and graphing! https://www.bilibili.com/video/BV13T4y1E7km?p=39 34分钟的例10 下面有步骤可以查看 可以写成下面这个 阅读全文
posted @ 2022-09-02 16:31 ChuckLu 阅读(1829) 评论(0) 推荐(0) 编辑
摘要:#region Assembly MahApps.Metro, Version=2.0.0.0, Culture=neutral, PublicKeyToken=51482d6f650b2b3f// C:\Users\clu\.nuget\packages\mahapps.metro\2.3.0\l 阅读全文
posted @ 2022-09-01 18:16 ChuckLu 阅读(104) 评论(0) 推荐(0) 编辑
摘要:第一种写法,写在Interaction.Triggers <UserControl> <b:Interaction.Triggers> <b:EventTrigger EventName="Loaded"> <b:CallMethodAction TargetObject="{Binding}" M 阅读全文
posted @ 2022-09-01 17:56 ChuckLu 阅读(265) 评论(0) 推荐(0) 编辑

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