partial | 易学教程

Setting attributes of a property in partial classes

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I have an employee class generated by Entity Framework (EF). public partial class employee { private string name; public string Name { get{return name;} set{ name = value;} } } Now I want to put a required attribute in the name property to use in for MVC3 validation in another employee partial class which is written by me in order to extend the one which is generated by EF so that I don't have to rewrite my code if I refresh the model generated by EF. My written partial class is in the same assembly and name space. public partial class employee { // What should I write here to add required

passing values to partial in rails 3

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问题 Here is how I pass the values/variable to the partial: <%= render "partials/banner", :locals => {:text_1 => t(:"main.home.banner_text_1"), :text_2 => t(:"main.home.banner_text_2") } %> then in the partial: <%= text_1 %> <%= text_2 %> but getting "undefined local variable or method text_1" Where should I set the variable so it could be accesible from all views and layouts in my app? Thanks! 回答1: If you have something that has to be displayed across all your views you can also create a

How to implement TypeScript deep partial mapped type not breaking array properties

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问题 Any ideas as to how might apply TypeScript's Partial mapped type to an interface recursively, at the same time not breaking any keys with array return types? The following approaches have not been sufficing: interface User { emailAddress: string; verification: { verified: boolean; verificationCode: string; } activeApps: string[]; } type PartialUser = Partial<User>; // does not affect properties of verification type PartialUser2 = DeepPartial<User>; // breaks activeApps' array return type;

篮子、水果和鸡蛋——关于C++的模板偏特化和萃取编程技法

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最近在读《STL源码剖析》。读这本书的时候发现自己的C++的知识其实是非常匮乏的。从大学的C++教材上学到一些C++基本的语法、内存管理、继承、多态等方面的基础知识。这些只是是一棵大树的根。而读STL的源码和侯捷的解析的时候，发现C++还有很多丰富的细节和技巧。这些是大树上的枝叶。学习C++，不仅要学习根，也要学习枝叶，这样才能让大树茂盛起来。虽然C++语法一些用法较为晦涩，但读完这些代码之后觉得思路比以前更开阔，另外可以活动脑筋。比如模板的偏特化这个特性。侯捷的《STL源码剖析》中对于模板的偏特化(partial specialization)的解释为：如果class template拥有一个以上的template参数，我们可以针对其中某个或多个 template参数进行特化工作。template是一个很抽象的东西。template偏特化之后就让模板变得具体那么一点点。用一个形象一点的比喻吧。我们把template比作一个装东西的篮子。这个篮子既可以装鸡蛋，也可以装苹果。那么所谓偏特化就是让你用一个篮子专门装水果，这就是template水果篮。以后你就只能使用水果篮来装苹果、装梨，而不能使用其他的篮子来装这些水果了。看一个STL例子：有一个“篮子” iterator_traits，它内部typedef 了value_type类型，用来定义模板的参数类型class I

Partial render in HTML/JavaScript

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问题 I have some HTML files, and each one of them I want to partially render in another HTML file, for example header.html and footer.html in order to observe DRY concept. HTML files should look like this:  <div> Content </div>  How can I do that? 回答1: Here's a link (first one from Google I might add) that explains how to do this in various languages. Also note that some IDEs take care of this for you. Dreamweaver being one example; in ASP.NET

ASP MVC View Content as JSON

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I have a MVC app with quite a few Controller Actions that are called using Ajax (jQuery) and return partial views content which updates a part of the screen. But what I would rather do is return JSON something like this. return Json(new { Result = true, Message = "Item has been saved", Content = View("Partial") }); Where the HTML is just a property of the Json. What this means is I need to retrieve the HTML that is rendered by the View method. Is there any easy way to do this, a few examples I have seen are quite convoluted. Edit: This question was originally for ASP.NET MVC 1, but if version

how to render partial on everything except a certain action

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I have a _header.html.erb partial which is where I put my navbar on my launch page I don't want to display the navbar. this is the body of application.html.erb <body> <%= render 'layouts/header' %> <div id="container"> <%= yield %> </div> </body> How do I render it on every action except specific actions on specific controllers? Replace your render with this: <%= render 'layouts/header' unless @disable_nav %> Then you can simply set disable_nav to true in any controller action you like: def landing_page @disable_nav = true end As a before_filter , which I'd encourage over the above:

How to merge two data frame based on partial string match with R?

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I have two data frames: the first one contains a huge number of proteins for which I have made several calculations. here an example: >Accession Description # Peptides A2 # PSM A2 # Peptides B2 # PSM B2 # Peptides C2 # PSM C2 # Peptides D2 # PSM D2 # Peptides E2 # PSM E2 # AAs MW [kDa] calc. pI P01837 Ig kappa chain C region OS=Mus musculus PE=1 SV=1 - [IGKC_MOUSE] 10 319 8 128 8 116 7 114 106 11,8 5,41 P01868 Ig gamma-1 chain C region secreted form OS=Mus musculus GN=Ighg1 PE=1 SV=1 - [IGHG1_MOUSE] 13 251 15 122 16 116 16 108 324 35,7 7,40 P60710 Actin, cytoplasmic 1 OS=Mus musculus GN=Actb

Problem with interface implementation in partial classes

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I have a question regarding a problem with L2S, Autogenerated DataContext and the use of Partial Classes. I have abstracted my datacontext and for every table I use, I'm implementing a class with an interface. In the code below you can see I have the Interface and two partial classes. The first class is just there to make sure the class in the auto-generated datacontext inherets Interface. The other autogenerated class makes sure the method from Interface is implemented. namespace PartialProject.objects { public interface Interface { Interface Instance { get; } } //To make sure the

Differences between functools.partial and a similar lambda?

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In Python, suppose I have a function f that I want to pass around with some secondary arguments (assume for simplicity that it's just the first argument that remains variable). What are the differences between doing it these two ways (if any)? # Assume secondary_args and secondary_kwargs have been defined import functools g1 = functools.partial(f, *secondary_args, **secondary_kwargs) g2 = lambda x: f(x, *secondary_args, **secondary_kwargs) In the doc page for partial , for example, there is this quote: partial objects defined in classes behave like static methods and do not transform into