Am new to EXTJS.
Can anyone explain me the relation between EXTJS and JSON.
From my understanding, this is what I have understood.
EXTJS is a framework and JSON is one of the many programming languages that can be used in that Framework.
Something similar to .net framework where we can use many programming languages like VB, C++, C#, and so on.
Is this right.
ExtJS is a framework indeed but the language it uses is JavaScript. ExtJS can consume objects expressed in JSON but JSON is NOT a programming language, it's a way to express objects, hence the name JavaScript Object Notation, see here for more information:
http://en.wikipedia.org/wiki/JSON
Related
I want to create a custom data type in Umbraco 7.3 without using AngularJS but I cannot do it because I don't have any knowledge about AngularJs.
I googled and saw that all of examples wrote by using AngularJs.
Is there any way to create a custom data type in Umbraco 7.3 without using Angular?
If not, please introduce some good sources to learning Angular that should be simple and practical.
No I don't believe it is possible since the interface is all in Angular but I could be wrong. Certainly the method that the team would prefer us to use is the Angular method. I have to be honest it was a little bit of a leap for me too creating my first editor but it's really not that difficult, trust me.
There is a good thread in the Umbraco form here: https://our.umbraco.org/forum/umbraco-7/using-umbraco-7/46925-Custom-datatype-in-umbraco-701
And I would advise downloading the Umbraco source as the best examples are in the source itself.
If I remember correctly, you can generate custom property editors using just C# classes and class attributes. Or you can extend existing data types and tweak them. The only problem is you're limited to lists and displaying existing JSON feeds - most of which is best done using extensions like uComponents and NuPickers.
Have you viewed Nibble's blog? He's the primary source for most things data type related.
For your situation, the nuPickers dot net extensions sounds best. There's examples on this link.
I tried many ways to implement oop in angularjs, could not find right way to accomplish it. Proper encapsulation, scope and polymorphism as other popular languages.
TypeScript is a nifty language that compiles to human-readable JavaScript and allows a more familiar class syntax for .NET and ActionScript 3 programmers. It's work a look.
Douglas Crockford also has a book called JavaScript: The Good Parts that describes methods for writing OO style code in JS. It's similar to what TypeScript compiles into.
I was reading about Handlebar.Js and to me it tries to imitate what Angular.Js does. My question is whether handlebarJS is mainly for frameworks which are using expressions poorly or we might need to get help from HandlebarJS inside application on Angular framework?
Indeed, Handlebars does somethings that AngularJS already provides out of the box: templating (e.g. taking a string like "here is {{myvalue}}!" and replacing the right places with the rights values). Handlebars is generally used alone, or together with "light" frameworks that don't include templating by default (Backbone for example).
Having just found out that you can use Ruby or Python inside a SilverLight application..
link here
..I wonder if its possible to bypass some of the SilverLight limitations with use of these languages instead of C#.
I know that the Ruby Engine inside the SilverLight application is trimmed down, just as the .NET CLR is, so I would like to know that even without all the functionality of a full Ruby or Python Engine:
Can I still be able to do something
with the use of these dynamic
languages that I wouldn't be able to do
in C# SilverLight?
.
If we need to download something built
by the community to extend the cut
down Ruby implementation (to support
Interop calls for instance?), what's
the impact on deployment?
.
If not, if you cannot do anything
you wouldn't be able to with c#, with these engines, besides
the typical benefit of a dynamic
language, and not really circumventing
some of the restrictions of the
SilverLight's CLR, why would one
choose to use Ruby in a SilverLight
application?
One of my interest points is use of sockets, socket usage in SilverLight is improving in each version, but it can still be troublesome because of the xml authorization file required on the server side..would ruby be able to make this unnecessary?
Thanks,
Ric
I suspect you won't be able to work around that. Keep in mind that it's not the language imposing the limitations here but the runtime. TO be precise, it's Silverlight itself. Since both C# and Ruby are compiled to CIL in this case you're left with more or less the exact same capabilities (except some differences in the typing system).
I'm not sure what you're getting at. Regardless of language you are still running inside the same "sandbox", security model and limited with the same cutdown libraries in Silverlight. You can extend the bits that you feel are "limited", assuming your code doesn't violate the security model, with any language.
You might be able to do things differently using another language, but the same basic constraints still apply.
You need to make sure the files are included in the xap or use the silverlight 3 slvx system to stream the assemblies defined in C# or VB etc.
The ruby language should be a complete ruby implementation so you can use all the language features ruby offers like metaprogramming etc.
All source files need to be included in the xap to work.
If you're using ruby then you get gestalt too and you can include ruby source files in the same way as you include javascript files in an html page today.
One of the best scenario for the usage of dynamic languages in .NET is to let the users extend the application with their own code, so that's the main reason I use IronPython in my Silverlight application. It's so nice to have that available in the limited .NET runtime of Silverlight. It's really easy to integrate (although I had a hard time making C# extension methods visible to Python) and it can be very powerful for the users.
Can I write programs in JavaFx or Flex with other languages (not ActionScript and JavaFX Script) like in Silverlight?
JavaFX can call Java and thus can call any code that generates Java classes. So you could in theory write code using JRuby or Groovy.
However, I would suggest that is not really how you could should JavaFx (or Flex). Rather you are really using these languages to build great UI using technologies that should be more reliable than AJAX/browser nightmares.
And that their real power comes when you are able to integrate them with back-end data sources (via REST/SOAP) that can be written in whatever language you want.
The question would be easier to answer if we understood why you would want to do this?
For JavaFX the answer is both yes and no, depending on what it is you want to achieve. JavaFX compiles to Java classes and in theory you can call the compiled JavaFX classes from any JVM language that can call Java classes. However, this isn't as simple as it sounds because some of the stunts they are pulling to implement the JavaFX language features make the implemented classes quite complex and the name mangling is not defined and subject to change. Any solution written this way would be very fragile.
However, much of the JavaFX functionality is based on pure Java libraries such as JMC (Java Media Components) for the media support and the scenegraph project (https://scenegraph.dev.java.net/) for the 2D scenegraph. These projects are written in Java and are much easier to call from Java and other JVM based languages.
I don't have any experience of Flex but as far as I know, you are stuck with MXML and ActionScript.
For flex you can only do MXML and Actionscript although there's an option to compile C/C++ code using Alchemy