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Dart : Structured web programming

Dart : Structured web programming:

Technical Overview

Dart is a new class-based programming language for creating structured web applications. Developed with the goals of simplicity, efficiency, and scalability, the Dart language combines powerful new language features with familiar language constructs into a clear, readable syntax.

Note: This document is part of an early preview of the Dart language and programming environment. Some elements are missing from the current release, and the details are subject to change based on the feedback we receive.

Contents

• Key features
• Design goals
• Show me the code
  • Classes and interfaces
  • Optional types
• How can I use Dart?
  • New MIME type
• Libraries
• Get involved

Key features

Key features of the Dart language include:

Classes

Classes and interfaces provide a well understood mechanism for efficiently defining APIs. These constructs enable encapsulation and reuse of methods and data.

Optional types

Dart programmers can optionally add static types to their code. Depending on programmer preference and stage of application development, the code can migrate from a simple, untyped experimental prototype to a complex, modular application with typing. Because types state programmer intent, less documentation is required to explain what is happening in the code, and type-checking tools can be used for debugging.

Libraries

Developers can create and use libraries that are guaranteed not to change during runtime. Independently developed pieces of code can therefore rely on shared libraries.

Tooling

Dart will include a rich set of execution environments, libraries, and development tools built to support the language. These tools will enable productive and dynamic development, including edit-and-continue debugging and beyond—up to a style where you program an application outline, run it, and fill in the blanks as you run.

Design goals

The Dart programming language is presented here in its early stages. The following design goals will guide the continued evolution and refinement of this open source project:

• Create a structured yet flexible programming language for the web.
• Make Dart feel familiar and natural to programmers and thus easy to learn.
• Ensure that all Dart language constructs allow high performance and fast application startup.
• Make Dart appropriate for the full range of devices on the web—including phones, tablets, laptops, and servers.
• Provide tools that make Dart run fast across all major modern browsers.

These design goals address the following problems currently facing web developers:

• Small scripts often evolve into large web applications with no apparent structure—they’re hard to debug and difficult to maintain. In addition, these monolithic apps can’t be split up so that different teams can work on them independently. It’s difficult to be productive when a web application gets large.
• Scripting languages are popular because their lightweight nature makes it easy to write code quickly. Generally, the contracts with other parts of an application are conveyed in comments rather than in the language structure itself. As a result, it’s difficult for someone other than the author to read and maintain a particular piece of code.
• With existing languages, the developer is forced to make a choice between static and dynamic languages. Traditional static languages require heavyweight toolchains and a coding style that can feel inflexible and overly constrained.
• Developers have not been able to create homogeneous systems that encompass both client and server, except for a few cases such as Node.js and Google Web Toolkit (GWT).
• Different languages and formats entail context switches that are cumbersome and add complexity to the coding process.

Ref: http://www.dartlang.org/docs/technical-overview/

What’s new for web designers – Oct 2011 | Webdesigner Depot

What’s new for web designers – Oct 2011 | Webdesigner Depot:

'via Blog this'

Photography - my long awaited dream

I was passionate about photography and always wanted to buy a dslr. Now it's been around 8 months I bought nikon d3100.
My weekends have been much better now a days. At least I stared something other than coding and sleeping!

Joined a Facebook group called frames Bangalore. They decide a place very Sunday and I have also started visiting different places.

Though I had dslr the biggest problem I had ( still have) is hesitation tale pictures of people. Slowly I'm overcoming on this. Dong know how long it's gonna take!

Thing of blogging regularly from now onwards

It's been a whole o didn't even touch my blogger account. Hoping to do better as finally I found blogger app for iPhone which is free.

Upload photos to orkut or to facebook using Picasa Plugins

I was searching for a way to upload photos from picasa directly to orkut or face book.
then i came accross a 2 nice plugins!
For facebook upload:http://apps.facebook.com/picasauploader/
For orkut upload : http://www.google.com/support/orkut/bin/answer.py?hl=en&answer=164972

Open both downloads using picasa. This will create facebook and orkut icons inside picasa which will allow you to upload directly.

Nice Site to Learn/Solve Problems in CSS : CSS-Tricks

I was browsing the net for some CSS problem i had in my project . Then i came to a very nice site called CSS Tricks . This is a site for advanced users. who have some practical experience in using CSS. I was impressed by the reasons and solutions given to some of the hectic CSS issues.

Installing Flex Builder on Eclipse 3.5 Problem Solved!

Here’s a blog post by a frustrated developer who seems to have found out how to set up the Flex Builder plugin with Eclipse 3.5 (I have tried it and it works!).  Thank you, frustrated developer!

http://worldwizards.blogspot.com/2009/08/eclipse-35-and-flex-builder.html

From the post:

(1) Download and install Eclipse 3.5. I used the J2EE install.
(2) Download and run the Flex Builder 3 installer.
(3) Ignore all the warnings that it only supports Eclipse 3.3 and 3.4. Just keep telling it that you know what you are doing and want to install it anyway. It will end with a scary message about failing and suggest you do a manual install from inside of eclipse. Don’t do that!
(4) Here is the magic, when it is done there will be a file in your eclipse/links directory called
com.adobe.flexbuilder.feature.core.link .( Note if the links folder do not exists then create this folder and also create a file called "com.adobe.flexbuilder.feature.core.link" without any further extensions)
Open that file in wordpad and you will see it contains one line:

C:/Program Files/Adobe/Flex Builder 3 Plug-in

Edit that line so it looks like this:

path=C:/Program Files/Adobe/Flex Builder 3 Plug-in

Save the file and start eclipse. Voilla!

Google++ Nice GreaseMonkey Script

A new script gives you a colorful, beautiful, wonderful Google search interface, with powerful modules like flickr, wiki, ad remover. Customizable. Compatible for autopagerize. self updated. Multi-column. I love it. :)
Get this script at :
http://userscripts.org/scripts/show/59333

P4EXP Windows Explorer Integration - Problem Solved

There were lots of issues  and i was struggling to use p4exp which come in bundle with p4v setup. i Couldn't configure it properly for a long time. I searched the net couldn't find the answer. Sometimes i used to get "no workspace has been set for this connection" or unable to connect, connection failure messages, even though your p4v is working properly.

The root cause was , whatever you configure in p4v is not available for p4exp. You need to configure this manually using p4v set.

I did the following :
Open command prompt and set the following values.
c:\>p4 set P4CLIENT=<WorkSpaceName>
c:\>p4 set P4PORT=<PerfoceServerip:PortNo>
c:\>p4 set P4USER=<PerforceUserName>
Example:
c:\>p4 set P4CLIENT=vijayk_workspace
c:\>p4 set P4PORT=172.19.86.15:1999
c:\>p4 set P4USER=vijayk

You can also have p4config file.

Basically i got some help from this link:
http://maillist.perforce.com/pipermail/perforce-user/2009-September/025941.html

Tabbing in Flex

Today i observed that tabbing was not working as i expected.
I had a custom component with 2 states read state and edit state. added few textfields in it. and in readstate i disabled tabs and in edit state i enabled tabs along with giving tabindex. But at runtime when i switch to editmode still tabbing is disabled!

My favorite place where i search for new technologies.

I normally goto 3 places to search new technologies.
1. microsoft labs, adobe labs, and google labs. These are the places where i find most of the new things which are at beta stage.

Google Sites

Let me make it clear I'm a big fan of google technologies.

I found one interesting app on the google. that was google site.
It is actually a website creation tool with live editing support.
I agree that there are hundreds of sites which provide website creation. But big benifit of google site is not only the web creation , its the integrety with other google apps like gmail, calender, picasa, google docs etc. You can create a single one place where all your internet identites, info are availabe.

Google Wave

Its an wonderful idea which will change the way how we communicate in the future.
E-mail, chat, documents now they are seperate entities. But google redefines it into one called waves.

http://wave.google.com/