异常处理汇总-后端系列 http://www.cnblogs.com/dunitian/p/4523006.html 应用场景:ViewModel==>Mode映射的时候出错 AutoMappe r错误信息:Unmapped members were found. Review the types and members below.Add a custom mapping expression, ignore, add a custom resolver, or modify the sour…

前言 我比较喜欢安静,大概和我喜欢研究和琢磨技术原因相关吧,刚好到了元旦节,这几天可以好好学习下EF Core,同时在项目当中用到EF Core,借此机会给予比较深入的理解,这里我们只讲解和EF 6.x中不同,相同的则不再叙述. EntityFramework Core 1.1方法理论详解 当我们利用EF Core查询数据库时如果我们不显式关闭变更追踪的话,此时实体是被追踪的,关于变更追踪我们下节再叙.就像我们之前在EF 6.x中讨论的那样,不建议手动关闭变更追踪,对于有些特殊情况下,关闭变更追…

ASP.NET Core 引用外部程序包的时候,有时会出现下面的错误: The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. Sample.Infrastructure..NETStan…

本文转自:http://docs.nopcommerce.com/display/nc/How+to+code+my+own+shipping+rate+computation+method Go to start of metadata   In nopCommerce, administration menu is build from the Sitemap.Configuration file which is located in Nop.Admin folder. To do the…

一.简介 这个示例详细介绍ALayout的add方法的使用(原理也适用于Linearlayout),以及add上去的新ui和已有的ui如何数据交换,初学者推荐.二.效果图 三.相关下载 https://github.com/do-project/code4do/tree/master/testALayoutAdd四.相关讨论 http://bbs.deviceone.net/forum.php?mod=viewthread&tid=512&extra=page%3D1五.更多案例http:…

You are given two linked lists representing two non-negative numbers. The most significant digit comes first and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two numbers do not con…

Given two non-negative numbers num1 and num2 represented as string, return the sum of num1 and num2. Note: The length of both num1 and num2 is < 5100. Both num1 and num2 contains only digits 0-9. Both num1 and num2 does not contain any leading zero.…

Given a string that contains only digits 0-9 and a target value, return all possibilities to add operators +, -, or * between the digits so they evaluate to the target value. Examples: "123", 6 -> ["1+2+3", "1*2*3"] "…

Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: 3 + 8 = 11, 1 + 1 = 2. Since 2 has only one digit, return it. Follow up: Could you do it without an…

Given a string of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operators. The valid operators are +, -and *. Example 1 Input: "2-1-1". ((2-1)-1) = 0 (2-(1-1)) = 2 Output: …