components

问题 I am trying to remove a component from list in R, but it is not working. I have list like this: > myList [[1]] [[1]][[1]] [1] "Sunny" "Cloudy" "Rainy" [[1]][[2]] [1] "Warm" "Cold" [[1]][[3]] [1] "Normal" "High" [[1]][[4]] [1] "Strong" "Weak" [[1]][[5]] [1] "Warm" "Cool" [[1]][[6]] [1] "Same" "Change" [[2]] [[2]][[1]] [1] "Sunny" "Cloudy" "Rainy" [[2]][[2]] [1] "Warm" "Cold" [[2]][[3]] [1] "Normal" "High" [[2]][[4]] [1] "Strong" "Weak" [[2]][[5]] [1] "Warm" "Cool" [[2]][[6]] [1] "Same" "Change

问题 Very basic C++ Builder question. I want to create a TButton at runtime. I would have thought that the following code would do it, but I see no button on the form: __fastcall TForm2::TForm2(TComponent* Owner): TForm(Owner) { TButton* b = new TButton(this); b->Height = 100; b->Width = 100; b->Left = 0; b->Top = 0; b->Caption = "Testing"; b->Visible = true; b->Enabled = true; } Thanks for any help! 回答1: You need to set the button's Parent (the surface it displays on): b->Parent = this; 来源： https

问题 I have a container that I need to change the UI form showing the form or showing a success page. The container has a state.showSuccess and I need the MyFormModule to be able to call the container to change the state. The below code works but I'm getting the following warning: "JSX props should not use.bind()" How can I get this to work without using .bind()? ... const myPage = class extends React.Component { state = { showSuccess: false }; showSuccess() { this.setState({ showSuccess: true, })

问题 I'm currently trying to build an Angular2 prototype (based on alpha44) of our Angular1 app (pretty complex one) and I'm trying to find the best model/data architecture when using routes and child routes. In my example, from a child component created from a route, I want to access a property of the parent component (hosting the router-outlet ). But when you create a component from a router-outlet , you cannot use @Input and @Output anymore. So what is the best practice to inject some data

问题 I'm currently trying to build an Angular2 prototype (based on alpha44) of our Angular1 app (pretty complex one) and I'm trying to find the best model/data architecture when using routes and child routes. In my example, from a child component created from a route, I want to access a property of the parent component (hosting the router-outlet ). But when you create a component from a router-outlet , you cannot use @Input and @Output anymore. So what is the best practice to inject some data

问题 I have created a component derived from TCustomPanel. On that panel I have a published property of a class derived from TOwnedCollection. All is working well and clicking the ellipsis in the object inspector for that property opens the default collection editor where I can manage the TCollectionItems in the list. TMyCustomPanel = class(TCustomPanel) private ... published property MyOwnedCollection: TMyOwnedCollection read GetMyOwnedCollection write SetMyOwnedCollection; end; I would also like

问题 I have two components SideNav and Dashboard (two are in different js files). SideNav will have selectbox as filters. I have to pass an array from Dashboard component to Sidebar component. This array has to given as values for select box (which is inside sidenav component). P.S. What will be the case if I have two different component classes defined in two different JS files. e.g. HomeComponent/Home.js -> Parent component Dashboard/Dashboard.js -> Child component I am making API call on "Home

问题 I'm looking for a quality WinForms component that supports syntax highlighting, code folding and the like. The key criteria are: Stability Value (price) Ability to easily customize syntax to highlight Light weight 回答1: ICSharpCode.TextEditor is free and pretty stable. As for commercial solution Actipro's SyntaxEditor might be a best choice 回答2: Enhancing ICSharpCode.TextEditor was trivial compared with Scintilla.Net. Another huge benefit of ICSharpCode.TextEditor is that allows you to

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . What component should I use to display a PDF file in a Delphi 2009 application? EDIT: I have been using PDF Viewer by Synactis - a very nice free PDF Viewer But it has no Delphi 2009 support. So I need to designing it out of the product 回答1: We embedded the Acrobat Reader in our Delphi application. Take a look

问题 I'm trying to do some testing with castle windsor involved, in one of my tests I want to check the windsor installers, so I check that the container can resolve my components given its interface. So far, so good, the problem starts when the component has PerWebRequest lifestyle in its installer, at first it complained about HttpContext.Current is null, having that one solved creating a fake Context in test setup I'm now having this exception in nunit test System.Exception : Looks like you