scaffold

在 Flutter 中，ListView 可以沿一个方向（垂直或水平方向）来排列其所有子 Widget，常被用于需要展示一组连续视图元素的场景 ListView 构造方法 ListView：仅适用于列表中含有少量元素的场景 ListView.build：适用于子 Widget 比较多的场景 ListView.separated：适用于需要设置分割线的场景 构造方法名 特点 使用场景 ListView 一次性创建好所有子 Widget 适用于展示少量连续子 Widget 的场景 ListView.build 提供了子 Widget 创建方法，仅在需要展示时才创建 适用于子 Widget 较多，且视觉效果呈现某种规律性的场景 ListView.separated 提供了子 Widget 创建方法，仅在需要展示时才创建，且提供了自定义分割线的功能 适用于子 Widget 较多，且视觉效果呈现某种规律性、每个子 Widget 之间需要分割线的场景 ListView 可以通过设置 children 参数，将所有子 Widget 包含到 listView 中，但这种创建方法要求提前将所有子 Widget 一次性创建好，而不是等到真正需要在屏幕上显示时才创建，即这种方法是导致性能下降。因此，这种方式只适合列表中含有少量元素的场景 class List extends

I cannot come up with a solution to a problem that's best described verbally and with a little code. I am using VS 2013, MVC 5, and EF6 code-first; I am also using the MvcControllerWithContext scaffold, which generates a controller and views that support CRUD operations. Simply, I have a simple model that contains a CreatedDate value: public class WarrantyModel { [Key] public int Id { get; set; } public string Description { get; set; } DateTime CreatedDate { get; set; } DateTime LastModifiedDate { get; set; } } The included MVC scaffold uses the same model for its index, create, delete,

Is there a way to generate the views separately using the rails generate command? I would also be willing to install a gem to accomplish that task f one exists. Basically the scaffolding command gives me too much and I would rather code my controller by hand. However, writing the index view with a table for the records would not be very efficient. Gazler You can generate the controller and the view using the controller generator. rails g controller controllername new create This will create actions new and create with their corresponding views. You still need to set up your routes manually

What's the difference between generating a scaffold and generating a model in Rails? What are the advantages/disadvantages of doing either? When you generate a model, you get a model as well as some related components. One of my favorite ways of explaining topics like this is to actually try it out or encourage others to try it, so if I were to enter the command rails generate model Foo name:string description:text within a Rails project, I would get: invoke active_record create db/migrate/20130719012107_create_foos.rb create app/models/foo.rb invoke test_unit create test/unit/foo_test.rb

I'm working on the RailsTutorial.org book and I keep hitting an error. When I run rails generate scaffold User name:string email:string I'm getting the following error: /Users/Cody/Development/rails_projects/demo_app/config/environments/development.rb:1:in `<top (required)>': undefined method `configure' for #<DemoApp::Application:0x007fdcea90ae10> (NoMethodError) I'm running Ruby 2.0.0 and Rails 4.0.4. Here is the contents of enviroments/development.rb Rails.application.configure do config.cache_classes = false config.consider_all_requests_local = true config.action_controller.perform_caching

I'm building a Razor Page app using ASP.NET 2017. When I run the command dotnet aspnet-codegenerator razorpage -m Activity -dc CongContext -udl -outDir Page\Activities --referenceScriptLibraries This error appears: Could not load file or assembly 'Microsoft.EntityFrameworkCore, Version=2.0.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) I stopped and restarted VS, I've also cleaned and build the solution. Attached jpg shows the code I typed and the results This is