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Matteo Spreafico

Joe Duffy's Weblog - OnBeingStateful - 0 views

www.bluebytesoftware.com/...OnBeingStateful.aspx

threading Functionallanguages F# STM MultiThreading Frontiers

shared by Matteo Spreafico on 10 Aug 09 - Cached
  • The biggest question left unanswered in my mind is the role state will play in software of the future.
  • The biggest question left unanswered in my mind is the role state will play in software of the future. That seems like an absurd statement, or a naïve one at the very least.  State is everywhere: The values held in memory. Data locally on disk. Data in-flight that is being sent over a network. Data stored in the cloud, including on a database, remote filesystem, etc. Certainly all of these kinds of state will continue to exist far into the future.  Data is king, and is one major factor that will drive the shift to parallel computing.  The question then is how will concurrent programs interact with this state, read and mutate it, and what isolation and synchronization mechanisms are necessary to do so?
  • Many programs have ample gratuitous dependencies, simply because of the habits we’ve grown accustomed to over 30 odd years of imperative programming.  Our education, mental models, books, best-of-breed algorithms, libraries, and languages all push us in this direction.  We like to scribble intermediary state into shared variables because it’s simple to do so and because it maps to our von Neumann model of how the computer works.
  • ...3 more annotations...
  • We need to get rid of these gratuitous dependencies.  Merely papering over them with a transaction—making them “safe”—doesn’t do anything to improve the natural parallelism that a program contains.  It just ensures it doesn’t crash.  Sure, that’s plenty important, but providing programming models and patterns to eliminate the gratuitous dependencies also achieves the goal of not crashing but with the added benefit of actually improving scalability too.  Transactions have worked so well in enabling automatic parallelism in databases because the basic model itself (without transactions) already implies natural isolation among queries.  Transactions break down and scalability suffers for programs that aren’t architected in this way.  We should learn from the experience of the database community in this regard
  • There will always be hidden mutation of shared state inside lower level system components.  These are often called “benevolent side-effects,” thanks to Hoare, and apply to things like lazy initialization and memorization caches.  These will be done by concurrency ninjas who understand locks.  And their effects will be isolated by convention.
  • Even with all of this support, we’d be left with an ecosystem of libraries like the .NET Framework itself which have been built atop a fundamentally mutable and imperative system.  The path forward here is less clear to me, although having the ability to retain a mutable model within pockets of guaranteed isolation certainly makes me think the libraries are salvageable.  Thankfully, the shift will likely be very gradual, and the pieces that pose substantial problems can be rewritten in place incrementally over time.  But we need the fundamental language and type system support first.
David McCart

The CSS3 border-radius property « Blogging CSS - 0 views

www.bloggingcss.com/...he-css3-border-radius-property

borderradius css3

shared by David McCart on 12 Aug 09 - Cached
  • David McCart on 12 Aug 09
     
    very cool... we've always know this about CSS, its just taking a very long time for some browsers to support it.
David Corking

Moving to Symbian S60: One Year Later - 0 views

www.brighthand.com/default.asp

shared by David Corking on 11 May 09 - Cached
  • too many ways to develop for Symbian devices: native code, WRT (web run-time) widgets, Java, browser-apps, etc.
    • David Corking
      David Corking on 11 May 09
       
      What disadvantage did he find with having choice? Fragmented community, inconsistent UI, difficulty integrating with 3rd party apps, something else?
  • 5-9 clicks just to add a calendar item.
  • disjointed software updating -- which requires a Windows PC in older Nokia devices -- that leaves many North American users without fixes to serious issues for all but the most popular of handsets.
  • ...7 more annotations...
  • there really isn't something as stable and capable as the Symbian OS (yet).
  • Check with your home or renter's insurance whether they will or not before purchasing high-end models.
  • Nokia's Symbian devices do not always use the same software as Samsung and LG's Symbian devices.
  • Battery life is better with Nokia E-series devices; much better.
  • This platform is fun, but is in major transition; something like what Palm is going through with Palm OS 5 and webOS.
  • phone as a laptop/MP3 player/GPS/web server replacement
  • definitely had its points where I wanted to turn back to the Palm Treos
David Corking

Dr. Dobb's | Q&A: When Mobility and Open Source Collide | March 28, 2009 - 0 views

www.ddj.com/216300285

symbian Cellular phones PDA

shared by David Corking on 11 May 09 - Cached
  • The web browser is a good example, on a pc it may make sense to ask a user to find, click, type, and browse the web or look for a service. In a mobile, converged product, you need to help the user be present with the service even or especially when they are driving or have the product in a pocket or handbag, and requiring them to constantly select 'yes' or to type in forms etc. are real headaches for a consumer.
  • We will not provide a store front, but will help the community create multiple online stores from which they can generate revenue for themselves and the developer.
  • At the other end of the spectrum, you see hoards of teenagers in the U.S., Europe and Asia happily texting one handed, using predictive text.
    • David Corking
      David Corking on 11 May 09
       
      No: they do NOT use predictive text - we 40 somethings might - but the kids uset text speak. How does a kid text rom an iPhone in his pocket?
  • ...7 more annotations...
  • Focus on the whole experience, meaning you need to be inclusive of display sizes, input methods, and form factors when you design and develop your applications and services.
    • David Corking
      David Corking on 11 May 09
       
      How much time does a Symbian app developer have to put in to considering all the different Symbian phones on the market?
  • .Net CF
  • expanding this functionality with QT libraries, Adobe AIR technology
  • StyleTap has a Palm emulator that allows you to run thousands of Palm applications on Symbian products
  • Red Five Labs has a runtime for Symbian OS which ensures Microsoft .net applications can be fully supported.
  • many people around the world are not buying and cannot afford a PC.
  • The Symbian Foundation is helping to do this by ensuring we lower the barrier for entry for software developers.
  • David Corking on 11 May 09
     
    Really interesting interview with Symbian boss
ASLI BUGAKAPTAN INCE

Logikit::Framework - 0 views

framework.logikit.net

development ajax MVC framework PHP5 open source

shared by ASLI BUGAKAPTAN INCE on 07 Dec 09 - Cached
  • ASLI BUGAKAPTAN INCE on 07 Dec 09
     
    Logikit::Framework (LF for short) is an application development framework for PHP 5. The idea is to let people code much faster by providing a solid and easy-to-use substructure for common tasks. LF deals with most of the time-consuming everyday issues and lets you focus on the logic of your code.
Fabien Cadet

You can always do less [2010-01-14] - (37signals) - 3 views

37signals.com/...2106-you-can-always-do-less

development pragmatic requirements

shared by Fabien Cadet on 17 Jan 10 - Cached
  • The hardest part about making good software that ships on time is knowing what and when to sacrifice.
  • We mistake what we said we’ll do with what must be done.
  • you can always do less.
  • ...2 more annotations...
  • What stops most people from doing less is the fear of failure. The misconception that if you don’t get it all done, the rest is worth nothing at all.
  • For every 1 day estimates of a task, there’s a simpler version of that you can do in 3 hours, and an even simpler still you can do in 30 minutes.
  • Fabien Cadet on 17 Jan 10
     
    « We mistake what we said we'll do with what must be done. » « For every 1 day estimates of a task, there's a simpler version of that you can do in 3 hours, and an even simpler still you can do in 30 minutes. »
Fabien Cadet

Fire your best people...reward the lazy ones | (blog) Integrate Button: Continuous Inte... - 4 views

blog.stelligent.com/...eoplereward-the-lazy-ones.html

development team management hints pragmatic

shared by Fabien Cadet on 16 Jan 10 - Cached
  • Before you start thinking that I’m trying to gather together a group of slackers, I’m suggesting the complete opposite of this. I just want people to think about the total time involved, not just fixing the symptom.
  • Fabien Cadet on 16 Jan 10
     
    « In my experience, what most people consider to be their "best" people are often the root of most problems. It's the difference between troubleshooters and troublepreventers. »
Fabien Cadet

Why writing software is not like engineering. by Terence Parr - 5 views

www.cs.usfca.edu/...software-not-engineering.html

software engineering thoughts

shared by Fabien Cadet on 04 Apr 10 - Cached
  • ...30% of all software projects are canceled, nearly half come in over budget, 60% are considered failures by the organizations that initiated them, and 9 out of 10 come in late.
  • Unfortunately, midcourse design changes happen in software all the time
  • In fact, the agile software development method is a direct response to ever-changing design requirements.
  • ...2 more annotations...
  • Still, constant changes to the design hamper development efforts and developers must constantly refactor software to prevent it from becoming a tangled, unmaintainable mess.
  • If you look at software today, through the lens of the history of engineering, it's certainly engineering of a sort--but it's the kind of engineering that people without the concept of the arch did. Most software today is very much like an Egyptian pyramid with millions of bricks piled on top of each other, with no structural integrity, but just done by brute force and thousands of slaves.
liza cainz

Efficient and Secured Computer Support - 1 views

Several months ago, I decided to change my Microsoft Windows support provider. The Microsoft help company I was using was not proficient in what they do. A friend of mine referred HelpGurus Compute...

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started by liza cainz on 10 Feb 11 no follow-up yet
Jay Dee

Good SEO Staff and Services - 2 views

Nowadays, people do not use the yellow pages or go directly to the stores to buy something. They are taking advantage of the internet whenever they have to buy something. For that reason, I have a ...

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started by Jay Dee on 25 Jan 11 no follow-up yet
liza cainz

HP Support Service for Printers - 2 views

In the office, frequent glitches of our HP DeskJet printer are a major source of headaches and stress. That is why I decided to hire the services of Help Gurus who is known to be a credible provide...

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started by liza cainz on 03 Feb 11 no follow-up yet
Võ Văn Đạt

make money online - 0 views

I found a great Internet company - Cashfiesta.com - that has created a product everyone can benefit from. They pay you while you work or play on your computer. All you need to do is keep their soft...

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started by Võ Văn Đạt on 23 Mar 11 no follow-up yet
paul silmonet

Instant Fix Slow Computer Solutions - 0 views

I bought a brand new PC with good specifications just last month. But only three weeks of use, I noticed that my PC froze and slowed down a bit. For the next three days, it continued to slow down. ...

Fix Slow Computer

started by paul silmonet on 01 Jun 11 no follow-up yet
helen hunt

Quality Computer Help Desk Support Services - 1 views

I am so thankful with HelpVirtualDeskSupport help desk support services. They help me fixed my computer. Their PC help desk support specialists really know what they are doing. HelpVirtualDeskSup...

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started by helen hunt on 07 Jun 11 no follow-up yet
hansel molly

Great Remote Computer Support Services - 3 views

Computer Support Professional offers unrivaled online computer support services that gave me the assurance that my computer is in good hands. Every time I needed the help of their computer support ...

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started by hansel molly on 06 Jun 11 no follow-up yet
Sanny Y

Online Computer Tech Support Service that Understands Urgency - 2 views

My business cannot live without the support of computers. My products are all recorded in a database system and so is my payroll system. Plus, I constantly surf the web to check on my clients onlin...

online computer tech support

started by Sanny Y on 14 Jun 11 no follow-up yet
Maria Babae

Desktop Support for Computer Efficiency - 1 views

We offer first rate desktop support to make your computer more efficient that includes: * Comprehensive clean-up of files and programs * Quick virus and malware removal * Up-to-date software for e...

started by Maria Babae on 10 Aug 11 no follow-up yet
Aliyah Rush

Fix Slow Computer Today Did A Good Job - 1 views

I would usually loudly rant, rave and complain about my computer's sluggish perfromance. It usually delays my work. Then my best friend advised me to call Fix Slow Computer Today. He said that they...

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started by Aliyah Rush on 12 Aug 11 no follow-up yet
janina smith

Online Computer Assistance Only from the Best - 2 views

I am an online writer and my boss would regularly ask me to submit as much as 10 articles daily. I often experience computer trouble, and I am having a hard time looking for a local computer techni...

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started by janina smith on 31 Jul 11 no follow-up yet
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