object
JQuery removes empty arrays when sending
Our organization has two approaches to the problem: Sending data as JSON as opposed to POST-data is a good all-purpose approach, though this is sometimes a little bit difficult to integrate with frameworks like Rails, because you may have to add explicit back-end calls to decode the JSON data. [“”] as noted by vinod will … Read more
Why is `object` an instance of `type` and `type` an instance of `object`?
Answers to all your questions can be found in this book: Python Types and Objects (could be found also in the: Wayback machine archive) UPD: another link to the book. Let me know if it dies too. The most important parts to answer your questions: Has the type/class of an object also to be an … Read more
What is DOM? (summary and importance)
In general terms a DOM is a model for a structured document. It is a central concept in today’s IT and no developer can opt out of DOM. Be it in .net, in HTML, in XML or other domains where it is used. It applies to all documents (word documents, HTML pages, XML files, etc). … Read more
Check if an object has a property [duplicate]
You could use ‘hasOwnProperty‘ to check if object have the specific property. if($scope.test.hasOwnProperty(‘bye’)){ // do this }else{ // do this then } Here’s a demo in jsFiddle. Hope this helpful.
what is “failure atomicity” used by J bloch and how its beneficial in terms of immutable object?
Bloch’s “Failure atomicity” means that if a method threw an exception, the object should still be usable afterwards. Generally, the object should be in the same state as it was before invoking the method. In the case of an immutable object, you gain that simply from the fact that it’s immutable. There is no operation … Read more
In Ruby, why does inspect() print out some kind of object id which is different from what object_id() gives?
The default implementation of inspect calls the default implementation of to_s, which just shows the hexadecimal value of the object directly, as seen in the Object#to_s docs (click on the method description to reveal the source). Meanwhile the comments in the C source underlying the implementation of object_id shows that there are different “namespaces” for … Read more
Why doesn’t the compiler convert var[] to object[] in c#?
The new [] notation is for saving you to type an explicit type of the array members (or allowing you to create arrays where its elements have an anonymous type), but its type inference is limited in that all elements must share the same type or be implicitly convertible to a common type shared by … Read more
JavaScript class – Call method when object initialized
NB. Constructor function names should start with a capital letter to distinguish them from ordinary functions, e.g. MyClass instead of myClass. Either you can call init from your constructor function: var myObj = new MyClass(2, true); function MyClass(v1, v2) { // … // pub methods this.init = function() { // do some stuff }; // … Read more