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Shahriar Kabir

MachForm - Stunning HTML And PHP Web Form Builder - 0 views

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    MachForm helps you make proficient evaluation form with greatest similarity. Lives up to expectations awesome on desktop PCs or portable/touch gadgets (iPhone, iPad, Android gadgets). Building structures has never been this good times.
fspore

Values, Types, and Operators :: Eloquent JavaScript - 0 views

  • Not all operators are symbols. Some are written as words. One example is the typeof operator, which produces a string value naming the type of the value you give it.
  • Having such numbers is useful for storing strings inside a computer because it makes it possible to represent them as a sequence of numbers. When comparing strings, JavaScript goes over them from left to right, comparing the numeric codes of the characters one by one.
  • There is only one value in JavaScript that is not equal to itself, and that is NaN, which stands for “not a number”.
  • ...16 more annotations...
  • In practice, you can usually get by with knowing that of the operators we have seen so far, || has the lowest precedence, then comes &&, then the comparison operators (>, ==, and so on), and then the rest. This order has been chosen such that, in typical expressions like the following one, as few parentheses as possible are necessary:
  • The difference in meaning between undefined and null is an accident of JavaScript’s design, and it doesn’t matter most of the time. In the cases where you actually have to concern yourself with these values, I recommend treating them as interchangeable (more on that in a moment).
  • . Yet in the third expression, + tries string concatenation before numeric addition
  • When something that doesn’t map to a number in an obvious way (such as "five" or undefined) is converted to a number, the value NaN is produced.
  • Further arithmetic operations on NaN keep producing NaN, so if you find yourself getting one of those in an unexpected place, look for accidental type conversions.
  • g ==, the outcome is easy to predict: you should get true when both values are the same, except in the case of NaN.
  • But when the types differ, JavaScript uses a complicated and confusing set of rules to determine what to do. In most cases, it just tries to convert one of the values to the other value’s type. However, when null or undefined occurs on either side of the operator, it produces true only if both sides are one of null or undefined.
  • That last piece of behavior is often useful. When you want to test whether a value has a real value instead of null or undefined, you can simply compare it to null with the == (or !=) operator.
  • The rules for converting strings and numbers to Boolean values state that 0, NaN, and the empty string ("") count as false, while all the other values count as true.
  • where you do not want any automatic type conversions to happen, there are two extra operators: === and !==. The first tests whether a value is precisely equal to the other, and the second tests whether it is not precisely equal. So "" === false is false as expected.
  • The logical operators && and || handle values of different types in a peculiar way. They will convert the value on their left side to Boolean type in order to decide what to do, but depending on the operator and the result of that conversion, they return either the original left-hand value or the right-hand value.
  • The || operator, for example, will return the value to its left when that can be converted to true and will return the value on its right otherwise. This conversion works as you’d expect for Boolean values and should do something analogous for values of other types.
  • This functionality allows the || operator to be used as a way to fall back on a default value. If you give it an expression that might produce an empty value on the left, the value on the right will be used as a replacement in that case.
  • The && operator works similarly, but the other way around. When the value to its left is something that converts to false, it returns that value, and otherwise it returns the value on its right.
  • Another important property of these two operators is that the expression to their right is evaluated only when necessary. In the case of true || X, no matter what X is—even if it’s an expression that does something terrible—the result will be true, and X is never evaluated. The same goes for false && X, which is false and will ignore X. This is called short-circuit evaluation.
  • - to negate a number
omouse

The Graphing Calculator Story - 0 views

  • I used to be a contractor for Apple, working on a secret project. Unfortunately, the computer we were building never saw the light of day. The project was so plagued by politics and ego that when the engineers requested technical oversight, our manager hired a psychologist instead. In August 1993, the project was canceled. A year of my work evaporated, my contract ended, and I was unemployed.
    • omouse
       
      This is why free/open source software is a good idea. If a company kills a project it could still be a benefit to the rest of the software world.
Joel Bennett

Software Transactional Memory (MSDN Blog: Developing for Developers) - 0 views

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    A great article explaining Software Transactional Memory for programmers who've never heard of it.
Joel Bennett

Doing Objects in VB.NET and C# - TerrySmith.net - 0 views

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    A basic eBook on object-oriented programming in VB.NET and C#. Covers construction and destruction, events, delegates, interfaces and inheritance, and exceptions.
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Joel Bennett

OtherGuiLibraries - from the wtl wiki - 0 views

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    The "Other GUI Libraries" page on the WTL wiki holds a wealth of information in the form of short reviews of various (mostly free, and mostly cross-platform) gui widget toolkits like Qt, wxWidgets, Ultimate++, JUCE and others I'd never heard of ...
Joel Bennett

Polyglot Programming | Dr. Dobb's | May 1, 2002 - 0 views

  • Everyone will benefit, even the Java community: Now that there's competition again, new constructs are—surprise!—again being considered for Java
  • Do languages have to sacrifice anything?
  • .NET goes much further: A routine written in a language L1 may call another routine written in a different language L2. A module in L1 may declare a variable whose type is a class declared in L2, and then call the corresponding L2 routines on that variable. If both languages are object oriented, a class in L1 can inherit from a class in L2. Exceptions triggered by a routine written in L1 and not handled on the L1 side will be passed to the caller, which—if written in L2—will process it using L2's own exception-handling mechanism. During a debugging session, you may move freely and seamlessly across modules written in L1 and L2. I don't know about you, but I've never seen anything coming even close to this level of interoperability.
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    This ability to mix languages offers great promise for the future of programming languages, as the practical advance of new language designs will no longer be hindered by the library issue ...
Joel Bennett

How to capture "legacy" program output in MSH and redirect them to MshHostUserInterface - 0 views

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    I can't figure out how to do this, maybe they never enabled it properly.
David Corking

Jonathan Schwartz's Blog: Sun's Network Innovations (3 of 4) - 0 views

  • this datacenter systems market is more than $150b annually. And in this datacenter market we build exceptional systems
  • storage, from our new flash based platforms to eco-efficient tape and archive solutions.
  • more than just naked components, they're engineered with remote management and monitoring, component redundancy, integrated virtualization, and on board storage and networking. That's why our margins are higher than the industry's
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  • we now build our entire line of storage systems from general purpose server parts, including Solaris and ZFS, our open source file system.
    • David Corking
       
      So, can anyone build a Sun storage device, or are Sun's "general purpose server parts" better (with better management and redundancy ...) ?
  • using a general purpose OS allows us to easily embrace specialized components (from flash memory to GPU's)
  • why am I paying you a million dollars?" I responded, "You can absolutely run it for free. You just can't call me on Christmas day, you'll be on your own." He gave me the PO.
    • David Corking
       
      Schwartz gives the strong impression of an IT company _without_ its hand in your pocket. It is a similar attitude and reputation, though with proprietary software, rather than services (for free software), that seems to have made Microsoft so wealthy in the late eighties and nineties.
  • Solaris OEM agreements with IBM, Dell, Intel, Fujitsu and HP are so important to our end customers - they know they'll never be locked in.
  • These open source platforms generate, alongside the services attached to them, over a billion dollars a year, making Sun by far and away the world's largest open source software company.
    • David Corking
       
      Hundreds of millions of dollars a year from open source Java alone!
  • Fighting free and open software, like fighting free news or free search, is like fighting gravity - and btw, gravity gets a lot stronger during economic downturns.
    • David Corking
       
      !
  • There is a robust, well-designed open source PBX Server called SipX that is primarily backed by Nortel (due to their acquisition of the creators, Pingtel).
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    Making money - billions of dollars of it - with open specification hardware and open source software
Matteo Spreafico

Classical Inheritance in JavaScript - 0 views

  • function ZParenizor2(value) { var that = new Parenizor(value); that.toString = function () { if (this.getValue()) { return this.uber('toString'); } return "-0-" }; return that; }
    • Matteo Spreafico
       
      This constructors lies, wondeful!
  • Again, we augment Function. We make an instance of the parent class and use it as the new prototype. We also correct the constructor field, and we add the uber method to the prototype as well.
  • This adds a public method to the Function.prototype, so all functions get it by Class Augmentation. It takes a name and a function, and adds them to a function's prototype object.
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  • To make the examples above work, I wrote four sugar methods. First, the method method, which adds an instance method to a class. Function.prototype.method = function (name, func) { this.prototype[name] = func; return this; };
  • JavaScript can be used like a classical language, but it also has a level of expressiveness which is quite unique. We have looked at Classical Inheritance, Swiss Inheritance, Parasitic Inheritance, Class Augmentation, and Object Augmentation. This large set of code reuse patterns comes from a language which is considered smaller and simpler than Java.
  • I have been writing JavaScript for 8 years now, and I have never once found need to use an uber function. The super idea is fairly important in the classical pattern, but it appears to be unnecessary in the prototypal and functional patterns. I now see my early attempts to support the classical model in JavaScript as a mistake.
liza cainz

Dependable Online Computer Repair Support - 1 views

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seth kutcher

Two Thumbs Up For Computer Assistance Services - 3 views

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anonymous

Getting Used to Help and Support - 0 views

I have never been used to getting help and support with all my problems. But when it comes to computer problems, I am glad Computer Tech Help And Support is helping me out. Whenever my PC is in tr...

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shayne mosley

Getting Used to Help and Support - 1 views

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seth kutcher

The Best Computer Repair Services in Town - 1 views

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shai edrote

They Helped Me With My PC Issues - 1 views

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Fabien Cadet

[Q&A] BPMN's advantages over other modeling methods ? - BPM Research Forums, 2006-08-13 - 1 views

  • On the other hand, BPMN has been designed with the aim of being a notation for high-level modeling.
  • BPMN models are not intended to be directly executed. They need to be refined (e.g. into BPEL processes) prior to execution.
  • At the most, BPMN might be used to generate "templates of BPEL code" that developers will have to refine to obtain a running implementation.
  • ...1 more annotation...
  • In fact, one could safely bet that a lot of people will define BPMN models for the pure purpose of documenting business processes, and not for the purpose of developing software. Many BPMN models will never be executed or lead to any piece of software. They'll just be used as part of a methodology for business improvement.
sally pearson

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joey potter

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Sydney Wedphoto

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