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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.
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Matteo Spreafico

stateless - A C# Hierarchical State Machine - 3 views

code.google.com/stateless

StateMachine c# OpenSource .NETGeneral

shared by Matteo Spreafico on 23 Jun 10 - Cached
  • A C# Hierarchical State Machine
  • Create state machines and lightweight state machine-based workflows directly in .NET code
block_chain_

5 Notable U.S. States That Welcome Crypto Regulations | Blockchain Council - 0 views

www.blockchain-council.org/...hat-welcome-crypto-regulations

#BlockchainTechnology#BlockchainCouncil

shared by block_chain_ on 17 Dec 19 - No Cached
  • block_chain_ on 17 Dec 19
     
    The other state was Nevada, and it unveiled new requirements for crypto ATM owners requesting them to get a transmission license. Business owners would have to pay as much as $10,000 for the first location granted by the license. The cost of every additional kiosk needs an extra $5,000. On the whole, bond requirements must not be higher than $250,000 in total.
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shared by realserviceitak on 06 Aug 23 - No Cached
  • jackmcmahon4 on 06 Aug 23
     
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    Buy Verified Payoneer Accounts Introduction Payoneer is a reputable payment service provider that offers both business and personal accounts. If you're looking to buy a verified Payoneer account, this guide will walk you through the process. Why you should purchase verified Payoneer accounts? Why should you purchase verified Payoneer accounts? You can get fast money transfers on your website. You can send money to anyone in the world, and it is easy to do so. You don't have to worry about getting scammed or having problems with your bank account if you are using a verified Payoneer account. How can I buy my own verified Payoneer account? One of the easiest ways to buy your own verified Payoneer account is by using a credit or debit card. You can also buy one with a bank account, but this may be more difficult because you'll need to fill out more paperwork and wait longer for verification. Buy Verified Payoneer Account If you'd prefer not to deal with any of these options, there are other options available as well that might work better for you: Money gram (via PayPal) - This service offers an alternative method of transferring funds from one person's account into another person's one. You'll still need access to both accounts in order for this process to work properly; however, it does mean that there will be no delay between when someone sends money and when it arrives at its destination! Is it safe to buy Payoneer accounts? Yes, it's safe to buy Payoneer accounts. Payoneer is a well-known payment processor with a good reputation for security and privacy. They use bank grade encryption to protect your data. Payoneer is based in the United States, but their service can be used globally by anyone with an internet connection regardless of where they live or work. What are the benefits of buying verified Payoneer accounts? When you buy a verified Payoneer account, it means that your money is safe and secure. You can use the account for online shop
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longchamppas

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Andrey Karpov

Test trivial code - 0 views

blog.ploeh.dk/...test-trivial-code

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shared by Andrey Karpov on 09 Mar 13 - No Cached
  • Andrey Karpov on 09 Mar 13
     
    A few days ago, Robert C. Martin posted a blog post on The Pragmatics of TDD, where he explains that he doesn't test-drive everything. Some of the exceptions he give, such as not test-driving GUI code and true one-shot code, make sense to me, but there are two exceptions I think are inconsistent. Robert C. Martin states that he doesn't test-drive
htmlslicemate.com

The State Of Responsive Web Design - 0 views

mobile.smashingmagazine.com/...state-of-responsive-web-design

responsive web design development

shared by htmlslicemate.com on 31 May 13 - No Cached
  • htmlslicemate.com on 31 May 13
     
    Responsive Web design has been around for some years now, and it was a hot topic in 2012. Many well-known people such as Brad Frost and Luke Wroblewski have a lot of experience with it and have helped us make huge improvements in the field. But there's still a whole lot to do.
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Mandeep Bajar

Push Notification Android - Main website name - 0 views

api.shephertz.com/...Push-Notification-Android

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shared by Mandeep Bajar on 26 Jul 13 - No Cached
  • Mandeep Bajar on 26 Jul 13
     
    "Push Notification helps you in sending event or alert to your app users even when they are not logged into app. App42 uses GCM (Google Cloud Messaging) to send Push Notification on android devices. Here are the few easy steps to get stated with App42 Android Push Notification."
Pooja Runija

New Yahoo Mobile Development Suite for App Makers - 0 views

www.mobilepundits.com/...velopment-suite-for-app-makers

yahoo mobile development suite app makers blog

shared by Pooja Runija on 14 Jul 15 - No Cached
  • Pooja Runija on 14 Jul 15
     
    Yahoo has acquired many small startups and big companies over the years but still not in a good position. Last year Yahoo acquired mobile analytics firm "Flurry" and CEO Marissa Mayer stated that Yahoo is a "mobile first company." 
reachtoroy

What can I expect from Android M in 2015? - 0 views

crbtechreviews.jimdo.com/...-expect-from-android-m-in-2015

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shared by reachtoroy on 09 Jun 15 - No Cached
  • reachtoroy on 09 Jun 15
     
    Google is predicted to reveal its next mobile and tablet os version, currently stated to be known as it when released in a designer review (like Android os L for Lollipop)
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shared by sahargull on 10 Aug 15 - No Cached
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Fabien Cadet

Why Singletons Are Controversial - google-singleton-detector - A brief explanation of t... - 0 views

code.google.com/...WhySingletonsAreControversial

design patterns singleton

shared by Fabien Cadet on 17 Mar 09 - Cached
  • Fabien Cadet on 17 Mar 09
     
    * Introduce a global state in the program, hide the dependencies. * Test-driven development: classes become tightly coupled with the singleton. Need to test the singleton along with the class to be tested initially.
Joel Bennett

Microsoft DreamSpark - 0 views

downloads.channel8.msdn.com

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shared by Joel Bennett on 26 Feb 08 - No Cached
  • Joel Bennett on 26 Feb 08
     
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Joel Bennett

Infer.NET - 0 views

research.microsoft.com/infernet

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shared by Joel Bennett on 26 Dec 08 - Cached
  • Joel Bennett on 26 Dec 08
     
    Infer.NET is a .NET framework for machine learning. It provides state-of-the-art message-passing algorithms and statistical routines for performing Bayesian inference.
Thomas Sullivan

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programmer-jobs.intellego-publishing.com

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shared by Thomas Sullivan on 01 Mar 10 - Cached
  • Thomas Sullivan on 01 Mar 10
     
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ybordiq

Best practices - robotlegs-framework - GitHub - 0 views

github.com/...Best-Practices

flex DI architecture actionscript

shared by ybordiq on 04 Jan 11 - No Cached
  • t is common to add event listeners in the onRegister method of the Mediator. At this phase of the Mediator’s lifecycle, it has been registered and its view component and other dependencies have been injected. The onRegister method must be overridden in concrete Mediator classes. Event listeners may be added in other methods as well, including event handler methods that are responding to both framework and view component events.
    • ybordiq
      ybordiq on 04 Jan 11
       
      note: this is only partially true: if any widget of the view is not included in the "normal" state of the view (cf use of states in flex + usage of "includeIn" component property), then it is null when the onRegister() is called => impossible to register an event listener to it via the eventMap (or any other way)=> we can listen to the view currentStateChange events and register event listeners at that moment, but this is somewhat ugly...(might be more a limitation of Flex than Robotleg, though...)
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