dynamic

问题 How do I get all values of dynamically selected dropdown in a single list? I tried doing callback inside callback with for loop iteration, but unable to get the desired list. The issue with def a_function where callback inside a callback is present. How to get in a single list of multiple dropdowns which is dynamically updated? import dash import dash_core_components as dcc import dash_html_components as html step = html.Div( children=[ "Menu:", dcc.Dropdown(options=[{'label': v, 'value': v}

问题 i want to show some data to the user the data maybe represented to user by different JSF tags based on a configuration for example some times it may represented by text and sometimes it may represented by graphical symbol or even chart also i want that this representation be customizable. how could i do this? 回答1: Make use of the rendered attribute. <h:outputText value="#{bean.value}" rendered="#{bean.datatype == 'text'}" /> <h:graphicImage value="#{bean.value}" rendered="#{bean.datatype ==

问题 I am trying to deserialize JSON that contains dash (-) characters in some of its property names, by using dynamic types: string json = MyWebClient.DownloadString("http://api.crossref.org/works/10.1093/brain/75.2.187"); dynamic result = JsonConvert.DeserializeObject<dynamic>(json); string title = result.message.title[0]; string journal = result.message.container-title[0]; I cannot get the "container-title" value due to use of an illegal character. And I don't want to simply use Replace() to

问题 I am trying to deserialize JSON that contains dash (-) characters in some of its property names, by using dynamic types: string json = MyWebClient.DownloadString("http://api.crossref.org/works/10.1093/brain/75.2.187"); dynamic result = JsonConvert.DeserializeObject<dynamic>(json); string title = result.message.title[0]; string journal = result.message.container-title[0]; I cannot get the "container-title" value due to use of an illegal character. And I don't want to simply use Replace() to

问题 I have a String that I need to convert to java class, compile and create an instance at run time: Suppose my String is: String s = " public class Test { public Double add(Double x, Double y){ return (x+y); } }" How can I convert it to a class Test .class, instantiate it and call the method add(Double x, Double y) at run time? I read about Byte Buddy , but the examples I see has a class already defined. In a situation like the above, could anyone give an example how can I use ByteBuddy or any

问题 I have two datasets: one is data about dogs [my data] the second is a lookup table of matching keys [I have no control over this data] The matching keys are updated regularly, and I want to create a View (or something that fulfills the same purpose) of the Dog dataset, which always joins on the most recent matching keys. Furthermore, I need to be able to reference it inline - as though it was a table . The match updates in the lookup table are differentiated by their schema names, so to get

问题 I have two datasets: one is data about dogs [my data] the second is a lookup table of matching keys [I have no control over this data] The matching keys are updated regularly, and I want to create a View (or something that fulfills the same purpose) of the Dog dataset, which always joins on the most recent matching keys. Furthermore, I need to be able to reference it inline - as though it was a table . The match updates in the lookup table are differentiated by their schema names, so to get

问题 Does Delphi provide some kind of event or hook for form creation (or more generally, form lifecycle events)? So that if somewhere in the code a form is created and shown (modal or non-modal, dynamically or in the usual app starup stage), Delphi calls an event handler which allows to log / analyse / modify the form before it is shown? I know there are options which involve introducing a base form class or a custom form creation procedure, but for existing applications which already have many

问题 Does Delphi provide some kind of event or hook for form creation (or more generally, form lifecycle events)? So that if somewhere in the code a form is created and shown (modal or non-modal, dynamically or in the usual app starup stage), Delphi calls an event handler which allows to log / analyse / modify the form before it is shown? I know there are options which involve introducing a base form class or a custom form creation procedure, but for existing applications which already have many

问题 This question already has an answer here : swiftUi : 2 Pickers on one screen - app crash with “Index out of range” (1 answer) Closed last month . I just started working on SwiftUI and I have some difficulty to manage several Pickers with dynamic data. In that case there's two Pickers, for Country and City . When I try to switch the Picker from a country with more cities than the other, the app would crash : Fatal error: Index out of range Any idea how I could fix that ? App Screenshot import