problem about observable-Collection of common programming errors

12 years ago
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3 minutes

  • jWeaver
    java class interface observer-pattern observable
    The Interviewer asked to me, What is Observer and Observable and when we used these? Since, I heard these term first time ever. So, I simply said Sorry. When I came back to home. I start searching about Observer and Observable and found some point from different resources :1.) Observable is a Class and Observer is an Interface2.) Observable class maintain a list of observers3.) When an Observable object is updated it invokes the update() method of each of its observers to notify that, it is chan

  • user1794106
    data-binding collections observable
    In maine, on my button click event handler I do:private void addIconButton_Click(object sender, EventArgs e){if (test){MessageBox.Show(“enters addIcon Main”);Note note = new Note();note.Modified = DateTimeOffset.Now;if (note != null){Settings.NotesList.Add(note); //this causes the issue. //Settings.NotesList[0] = note;}Settings.CurrentNoteIndex = 0;test = false;MessageBox.Show(“right before navigate”);this.NavigationService.Navigate(new Uri(“/DetailsPage.XAML”, UriKind.Relative));MessageBox.Sho

  • Jaak Kütt
    javascript knockout.js typeerror observable ko.observablearray
    I was playing around with building a custom handler which adds new observableArray-properties to parts of MyViewModel to make sure the nested templates within elements bound by my handlers would always have the right arrays – see jsfiddle for full example.<div data-bind=”contentAvailable: [‘children’,’pos1′]”><div data-bind=”template: { name: ‘default’, foreach: children().pos1 }”> </div>Within the handler I checked if the current object bindingContext.$data had an observable o

  • João Bragança
    c# system.reactive observable
    I need to model an approval process. Before it was pretty simple. Two roles had to approve something, and then we could go on to the next step:public class Approved {public string ApproverRole; }var approvals = Subscribe<Approved>();var vpOfFinance = approvals.Where(e => e.ApproverRole == “Finance VP”); var vpOfSales = approvals.Where(e => e.ApproverRole == “Sales VP”);var approvedByAll = vpOfFinance.Zip(vpOfSales, Tuple.Create);approvedByAll.Subscribe(_ => SomeInterestingBusiness

  • massquote
    model slider kendo-ui observable
    I was trying to bind input box to kendo slider and this how lead me. If you have better way on implementing a requirement like this please share also. Thanks.

  • Kassem
    javascript data-binding knockout.js observable
    I’m trying to create an HtmlHelper extension that outputs some HTML to the view. In this HTML I’m wiring up some KnockoutJS binding. I’m new to KO so I’m still struggling in getting some things done. Anyway, what I’m trying to do is generate input fields (in the server-side code) bound to observables on my client-side code, then set the initial values of the observables through the value of the hidden fields. Unfortunately, that is not working for me. So I’m wondering if there any way I could ge

  • Praveen Yadav
    kendo-ui observable kendo-grid
    I am new on kendo UI framework. I am struggling with observable datasource with kendoGrid. The problem is the table gets created but with empty data. Here is the link http://jsfiddle.net/praveeny1986/Pf3TQ/5/And the code :var gridDataModel = kendo.data.Model.define({ fields: {“Product”: {type: “string”},”Domain”: {type: “string”},”PercentPlan”: {type: “string”},”CWV”: {type: “string”},”Target”: {type: “string”},”Accuracy”: {type: “string”} } });var dataSource = new kendo.data.DataSource({data: t

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