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今日内容总结 ——流程控制(if,while,for) if ：用来判断事物的对错、真假、是否执行。 根据不同的情况判断，条件满足执行某条件下的语句 语法结构（3种） # 第一种，只有if结构。条件表达式成立，执行代码块 if 条件表达式: 代码块 # 第二种，if……else……条件表达式成立，执行代码块1，否则执行代码块2 if 条件表达式: 代码块1 else: 代码块2 # 第三种，if……elif……else…… # 如果条件表达式1成立，执行代码块1；不成立，判断条件表达式2，如果条件表达式2成立，执行代码块2，否则执行代码块3。其中，elif可以有多个。 if 条件表达式1: 代码块1 elif 条件表达式2: 代码块2 else:aD 代码块3 if的嵌套 # 需求：溜达的时候，迎面走来个人，如果是个帅气的小哥哥，就上前要微信，否则就嫌弃地走掉。如果要到微信，就在一起散步，否则就回家撸猫 gender = 'male' age = 21 is_smart = True # 帅气的小哥哥 is_success = True # 要到微信 if gender == 'male' and 30 > age > 20 and is_smart: print("哈喽，小哥哥，加个微信呗") if is_success: print("那咱一起散步吧……") else:

D365FO官方Wiki: https://docs.microsoft.com/en-us/dynamics365/unified-operations/fin-and-ops/ 1. 窗体控件不再支持Active X 控件和ManagedHost控件，取而代之的是一种可扩展的控件架构。 2. 获得窗体的DataSource [FormEventHandler(formStr(HcmPosition), FormEventType::Initialized)] public static void HcmPosition_OnInitialized(xFormRun sender, FormEventArgs e) { FormDataSource hcmosition_ds = sender.dataSource(formDataSourceStr(HcmPosition, HcmPosition)); Or FormDataSource hcmosition_ds = sender.dataSource('HcmPosition'); } 3. FormDataSource的EventHandler获得FormRun [FormDataSourceEventHandler(formDataSourceStr(HcmPosition, HcmPosition),

description analysis 考虑 \((0,0,0)\) 走到某个点 \((i,j,k)\) 的 贡献 ，相当于插板问题 \(i+j\) 个空插 \(k\) 个板可以有空， \(i\) 个空插 \(j\) 个板可以有空，就是 \(C^k_{i+j+k}*C^j_{i+j}\) 对于每个障碍，要算出被它包含的障碍走到它的合法方案数少了多少 那么就是拿答案减去走到被包含的障碍的 答案 乘右上角矩形的 贡献 code #pragma GCC optimize("O3") #pragma G++ optimize("O3") #include<stdio.h> #include<string.h> #include<algorithm> #define MAX 300000 #define ha 1000000007 #define ll long long #define reg register ll #define fo(i,a,b) for (reg i=a;i<=b;++i) #define fd(i,a,b) for (reg i=a;i>=b;--i) using namespace std; ll fac[300005],inv[300005]; ll f[305][305][305]; bool bz[305][305][305]; ll n,m;

一.python语法之流程控制 1.1什么是流程控制？ 流程控制即控制流程，具体指控制程序的执行流程，而程序的执行流程分为三种结构：顺序结构（之前我们写的代码都是顺序结构）、分支结构（判断）、循环结构（while for） 二.分支结构 2.1 什么是分支结构？ 分支结构就是根据条件判断的真假去执行不同分支对应的子代码 2.2 为什么要用分支结构？ 为了让计算机可以有像人一样的逻辑判断能力去做事 2.3 怎么使用分支结构？ 引入if语句 定义：主要是用于判断事物的对错 真假 是否可行 语法结构 #第一种结构if 条件: 代码块#第二种结构if 条件: 代码块1else: 代码块2#第三种结构if 条件1: 代码块1elif 条件2: 代码块2elif 条件3: 代码块3elif 条件n： 代码块nelse： 代码块n+1 案例1： 如果今天下雨，那么就带伞 weather = '不下雨'if weather == '下雨': print('出门记得带伞') 案例2： 如果今天下雨，那么就带伞；反之则不带 weather = '不下雨'if weather == '下雨': print('出门记得带伞')else: print('不用带伞') 案例3： 如果：成绩>=90，那么：优秀 如果成绩>=80且<90,那么：良好 如果成绩>=70且<80,那么：普通 其他情况：不合格

题目描述 Description Input 从文件b.in中读入数据. 第丬行三个正整数 n, m, K. 接下来 n 行每行 m 个正整数, 表示矩阵A. Output 输出到文件b.out中. 不行, 两个数分别表示机大值和和. Sample Input 3 5 2 1 5 3 3 3 4 1 3 3 4 4 2 4 4 3 Sample Output 4 20 Data Constraint 题解 从左往右扫，维护一个宽为K的区域 对于一个位置(i,j)，求出bz[i][j]表示(i,j+1)~(i,j+K)之中是否有a[i][j] 那么在求以每个点为左上角时，区域内的点的纵坐标不会影响到结果 所以维护 每种权值出现的行 ，0-->1就直接加，1-->0就是在删掉一个bz[i][j]=0的值时 只需要在删/加的时候求出一种值上的一个位置的前/后继 可以线段树，也可以用bitset的_Find_next() 然而NOIP应该不能用 所以显然手写bitset（ code #include <algorithm> #include <iostream> #include <cstdlib> #include <cstring> #include <cstdio> #include <cmath> #define fo(a,b,c) for (a=b; a<=c; a++)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to add VCL styles (Inno Setup 5.5.6 (a)) for my installer. Style load correctly during the installation, but when I try to uninstall I get an error Runtime Error(at-1:0): Cannot Import dll:VclStylesInno.dll. And I can not uninstall my program. Does anyone know what I can do? Thanks for the help #define VCLStylesSkinPath "{localappdata}\VCLStylesSkin" [Files] ;Install Source: "VclStylesinno.dll"; DestDir: "{app}"; Flags: dontcopy Source: "Styles\Auric.vsf"; DestDir: "{app}"; Flags: dontcopy ;Uninstall Source: "VclStylesinno.dll";

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have set the global converter defaults for JSON.NET like so: var jsonSerializerSettings = new JsonSerializerSettings { Converters = new JsonConverter[] { new QuestionTypeConverter() } }; JsonConvert.DefaultSettings = () => jsonSerializerSettings; This works well with the rest of my code ("QuestionTypeConverter" is being used and works as expected), however, when retrieving an object from the Akavache cache, my "QuestionTypeConverter" is ignored and thus my object does not get deserialized properly. How can I enforce the usage of my custom

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: Has anyone ever launched cloud-based apps / websites that use a local SQLite DB as the primary data source? Are there any warnings about this? My environment: C# 3.0 app currently uses a sql server 2008 db current db size 30 mb- 回答1: If you expect a lot of traffic, you really shouldn't. SQLite is meant to be used as a lightweight SQL database, and is not meant for highly concurrent access (since it locks the whole database file) which could be an important requirement in this case. Read: Appropriate uses for SQLite 转载请标明出处: Can I

题目描述 FJ has purchased N (1 <= N <= 2000) yummy treats for the cows who get money for giving vast amounts of milk. FJ sells one treat per day and wants to maximize the money he receives over a given period time. The treats are interesting for many reasons:The treats are numbered 1..N and stored sequentially in single file in a long box that is open at both ends. On any day, FJ can retrieve one treat from either end of his stash of treats.Like fine wines and delicious cheeses, the treats improve with age and command greater prices.The treats are not uniform: some are better and have higher

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I followed this excellent post for generating dynamic controls in my mvc3 app. And now I am trying to do client side unobstructive validation for phonenumber field. So I added 'Required' attribute on the 'PhoneNumber' property. The unobstructive validation works for the phonenumber fields which are generated/rendered by the server (i.e. on pageload). But it doesnt works for the fields that are dynamically added by javascript method. I know that I need to write some jquery code to add the rules/adapters or anything which notifies the browser