Difference between subscribe and computed in knockout js

In short, a computed is reasonably like a getter/setter property and mainly for calculated values. Subscribe may be a kind of recall perform that you will add/remove from a subscribable object, which observables and computeds derive from. By default, a subscription subscribes to a topic called ‘change’, and would look like this when expressly defined:….

Binding true / false to radio buttons in Knockout JS

In this case, i think that a nice choice is to make the writeable computed evident a “sub-observable” of your IsActive discernible. Your view model would look like: var ViewModel = function() { this.IsActive = ko.observable(true); this.IsActive.ForEditing = ko.computed({ read: function() { return this.IsActive().toString(); }, write: function(newValue) { this.IsActive(newValue === “true”); }, owner: this }); };….

Abstract classes in c#

Abstract categories, marked by the keyword abstract in the category definition, square measure usually accustomed outline a base category within the hierarchy. what is special concerning them, is that you just cannot create associate instance of them – if you try, you’ll get a compile error. Instead, you have to taxonomic category them, as tutored….

Casting and Type Conversions (C# Programming)

C# is statically-typed at compile time, after a variable is asserted, it cannot be declared once more or accustomed store values of another kind unless that kind is convertible to the variable’s kind. as an example, there’s no conversion from Associate in Nursing number to any arbitrary string. Therefore, once you declare i as associate….

Naming convention in Ext JS.

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Naming convention is a set of rule to be followed for identifiers. It makes code more readable and understandable to the other programmers as well. Naming convention in Ext JS follows the standard JavaScript convention which is not mandatory but a good practice to follow. It should follows camel case syntax for naming the class,….

Basic Introduction of ExtJS.

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ExtJS stand for Extended JavaScript, is a JavaScript framework and product of sencha which is based on YUI (Yahoo user interface).It is basically a desktop application development platform with modern UI. This tutorial gives a complete understanding of Ext JS. This reference will take you through simple and practical approach while learning Ext JS. The….

Introduction to OOPS Concepts.

OOP stands for Object Oriented Programming. It is a programming methodology that uses Objects to build a system or web applications using programming languages like C#, Vb.net etc. Here, Objects plays a very important role because it hides the implementation details and exposed only the needed functionalities and related stuff that is required to adopt….

Constraints in SQL Server

A constraint is a property assigned to a column or the set of columns in a table that prevents certain types of inconsistent data values from being placed in the column(s). Constraints are used to enforce the data integrity. This ensures the accuracy and reliability of the data in the database. The following categories of….

Differences between SQL Server temporary tables and table variables

Temporary tables are created in tempdb. The name “temporary” is slightly misleading, for even though the tables are instantiated in tempdb, they are backed by physical disk and are even logged into the transaction log. They act like regular tables in that you can query their data via SELECT queries and modify their data via….

What is the difference between Constants and Readonly Property?

The readonly keyword is different from the const keyword. A const field can only be initialized at the declaration of the field. A readonly field can be initialized either at the declaration or in a constructor. Therefore, readonly fields can have different values depending on the constructor used. Also, while a const field is a….