{"id":4198,"date":"2014-03-30T09:13:05","date_gmt":"2014-03-30T09:13:05","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-observable-collection-of-common-programming-errors\/"},"modified":"2014-03-30T09:13:05","modified_gmt":"2014-03-30T09:13:05","slug":"problem-about-observable-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-observable-collection-of-common-programming-errors\/","title":{"rendered":"problem about observable-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/f8bd1c472fe5832e125fd4008578608a?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\njWeaver<br \/>\njava class interface observer-pattern observable<br \/>\nThe 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<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/27dcf3bd9f6acc5d5af2c2eefcd197d8?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nuser1794106<br \/>\ndata-binding collections observable<br \/>\nIn maine, on my button click event handler I do:private void addIconButton_Click(object sender, EventArgs e){if (test){MessageBox.Show(&#8220;enters addIcon Main&#8221;);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(&#8220;right before navigate&#8221;);this.NavigationService.Navigate(new Uri(&#8220;\/DetailsPage.XAML&#8221;, UriKind.Relative));MessageBox.Sho<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/cHrKY.jpg?s=32&amp;g=1\" \/><br \/>\nJaak K\u00fctt<br \/>\njavascript knockout.js typeerror observable ko.observablearray<br \/>\nI 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 &#8211; see jsfiddle for full example.&lt;div data-bind=&#8221;contentAvailable: [&#8216;children&#8217;,&#8217;pos1&#8242;]&#8221;&gt;&lt;div data-bind=&#8221;template: { name: &#8216;default&#8217;, foreach: children().pos1 }&#8221;&gt; &lt;\/div&gt;Within the handler I checked if the current object bindingContext.$data had an observable o<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/5625abed31e8e9490d502ab231b667f0?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nJo\u00e3o Bragan\u00e7a<br \/>\nc# system.reactive observable<br \/>\nI 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&lt;Approved&gt;();var vpOfFinance = approvals.Where(e =&gt; e.ApproverRole == &#8220;Finance VP&#8221;); var vpOfSales = approvals.Where(e =&gt; e.ApproverRole == &#8220;Sales VP&#8221;);var approvedByAll = vpOfFinance.Zip(vpOfSales, Tuple.Create);approvedByAll.Subscribe(_ =&gt; SomeInterestingBusiness<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/9ed26a40ad0cba0577f2935753abc9d3?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nmassquote<br \/>\nmodel slider kendo-ui observable<br \/>\nI 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.<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/a1c76a551bd666266265d43086cf29d7?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nKassem<br \/>\njavascript data-binding knockout.js observable<br \/>\nI&#8217;m trying to create an HtmlHelper extension that outputs some HTML to the view. In this HTML I&#8217;m wiring up some KnockoutJS binding. I&#8217;m new to KO so I&#8217;m still struggling in getting some things done. Anyway, what I&#8217;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&#8217;m wondering if there any way I could ge<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/8de22e82a9d110d8b9ba9f8d62463654?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nPraveen Yadav<br \/>\nkendo-ui observable kendo-grid<br \/>\nI 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: {&#8220;Product&#8221;: {type: &#8220;string&#8221;},&#8221;Domain&#8221;: {type: &#8220;string&#8221;},&#8221;PercentPlan&#8221;: {type: &#8220;string&#8221;},&#8221;CWV&#8221;: {type: &#8220;string&#8221;},&#8221;Target&#8221;: {type: &#8220;string&#8221;},&#8221;Accuracy&#8221;: {type: &#8220;string&#8221;} } });var dataSource = new kendo.data.DataSource({data: t<\/li>\n<\/ul>\n<p>Web site is in building<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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.) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4198","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=4198"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4198\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=4198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=4198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=4198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}