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• Difference between Cloud and Virtualization

  - by Akash Kava

  Ops: This does not belong to ServerFault because it focuses on Programing Architecture. I have following questions regarding differences between Cloud and Virtualization.. How Cloud is different then Virtualization? Currently I tried to find out pricing of Rackspace, Amazone and all similar cloud providers, I found that our current 6 dedicated servers came cheaper then their pricing. So how one can claim cloud is cheaper? Is it cheaper only in comparison of normal hosting? We re organized our infrastructure in virtual environment to reduce or configuration overhead at time of failure, we did not have to rewrite any peice of code that is already written for earlier setup. So moving to virtualization does not require any re programming. But cloud is absoltely different and it will require entire reprogramming right? Is it really worth to recode when our current IT costs are 3-4 times lower then cloud hosting including raid backups and all sort of clustering for high availability? New programming architecture means new overheads of training staff, new methods of testing and new deployment schemes, does it justify over "on demand resource usage" words of cloud? We are having current development architecture with simple Server side ASP.NET WebServices with no local context and on client side Flex/Silverlight which offers pretty good REST architecture and its highly scalable. How does cloud differs from REST model of deployment? On storage, SQL Server or MySQL offers pretty good replication and high availibility then what is advantage in cloud? Data guarantee, one of our vendor hosting some other customer's app on cloud (one of most used), lost Entire Hard Disk (the virtual) and entire module in first 6 months. Second provider said its your duty to take backup, fine I agree, but no provider gives SLA for data guarantee, they give 99% uptime. However in most business apps, uptime is less important then data integrity. In our 10 years of dedicated hosting experience we had only one hard disk crash. This makes me little skeptical to go for cloud and loosing control over data. And I feel its just a big marketing buzz to sell virtulization in different form. Size of data, currently all providers charge very heavy for large data, if you are hosting only below 100GB cloud can be good alternative, but I think virtual servers and dedicated servers above 100GB to few TBs are still cheaper. Why would want to pay so high on cloud when there is no data guarentee as well as it doesnt say anything about redundancy. (I wish SO had something for spell check for Internet Explorer, sorry for wrong spellings in my post)

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• Best protocol for client/server communication, from PHP/Perl to C++/Qt4

  - by Kyle

  I'm the author of an Open Source kiosk management system, Libki. The current version, though functional, was very much a learning experience for me. I'm working on a complete rewrite and am having a hard time deciding what protocol to use. The server will be written in PHP or Perl. Most likely PHP because I need to support some uncommon protocols that Library software use, ( SIP and NCIP ). So far I've only found a SIP2 library in PHP. The client is written in C++/Qt4. I'm looking at RPC and REST for client/server communication. I've found RPC client libraries for Qt4, and REST is already part of the Qt4 libraries. Is there an alternative I've missed? So far, REST seems to be the winner.

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• iPhone apps for company-internal use - possible?

  - by Michael Stum

  I hope this is still programming related, as SuperUser doesn't seem the appropriate place. Basically I wonder if it is possible to have Applications that are internal to a company on the iPhone? That is something like a companion Application to an Intranet (when Safari and Mail just don't cut it) which wouldn't make sense on the AppStore (and likely wouldn't get approved anyway). Is something like that possible (without Jailbreaking or doing anything else that Apple doesn't normally want)?

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• using IFPCLogEntry

  - by sadegh

  hi . this is ISA server programming SDK ; how can i use IFPCLogEntry to logging ?

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• Implementing the procducer-consumer pattern with .NET 4.0

  - by bitbonk

  With alle the new paralell programming features in .NET 4.0, what would be a a simple and fast way to implement the producer-consumer pattern (where at least one thread is producing/enqueuing task items and another thread executes/dequeues these tasks). Can we benfit from all these new APIs? What is your preferred implementation of this pattern?

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• converting a form from text to textarea

  - by David Cook

  I have a form created to pull PHP values into my database. I created the form with all type="text" constructions. What follows is the code that used to set up the input of data and confirmed that it is functional. <label>About Me: <input type="text" name="BIO_info"/></label> I converted the input to a textarea and adjusted some parameters for proper display. Unfortunately, it has broken the ability for the script to function. What follows is the code I wrote to convert and store from a text area input. <label for="BIO_info" style=" margin-bottom: 500px; margin-top: 2000px; ">About Me: <textarea name="BIO_info" rows="20" cols="60" style="resize: none; overflow-y: hidden;vertical-align:middle;"></textarea> <p> I would appreciate any suggestions.

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• yes another question about Interfaces?

  - by sam

  Hi Guys, I started commercial programming lately, I am used to functions, then now I always questions about interfaces.. Do you provide me with some links and book names, that can explain deeply why using interfaces? is interfaces required for small projects?? I am using C#. thanks

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• Have you ever had to use bit shifting in real projects?

  - by Philip Morton

  Have you ever had to use bit shifting in real programming projects? Most (if not all) high level languages have shift operators in them, but when would you actually need to use them?

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• Converting serial port data to TCP/IP in a linux environment

  - by Doug

  Thank you in advance. I need to get data from the serial port of a linux system and convert it to TCP/IP to send to a server. Is this difficult to do? I have some basic programming experience but not much experience with Linux. Are there any open source applications that do this? Again thank you for any help.

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• What's the first thing I should try to learn before learning to program?

  - by Johnny 5

  I'm coming from an XHTML/CSS background. I don't know much about JavaScript. Would you recommend learning JavaScript before learning a server programming language?

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• Are there documentation tools for SOAP web services?

  - by mjustin

  Many tools are available for web service designing, programming and testing, commercial and free. But what is available in the area of documentation? Are there tools which can parse a WSDL and then generate a 'human-readable' documentation in HTML (or PDF)?

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• C#- Console Program Ideas for Noob

  - by user335932

  So, Im a beginning C# programmer. I know basic syntax and simple things like if statements and loops(methods and classes too). I've only used console apps right now havent bothered with windows forms yet. So any simple app ideas that introduce new things important for C# programming. Also, NO tutorials. I want to make all by myself.

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• What's the meaning of the PHP Token Name T_PAAMAYIM_NEKUDOTAYIM

  - by Alan Storm

  What's the story behind the ::'s sometimes token name T_PAAMAYIM_NEKUDOTAYIM I'm mainly interested in knowing if This is an abbreviation for something else This is a phrase in a language other than English, and if so what's the language and what's a rough translation This is some obscure-to-me programming term Drunk Developers Thanks!

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• What books are available in market for learning the Windows API for GUI development with C++?

  - by Ala ABUDEEB

  Please give me some titles, preferably not free books. I don't need it to be free; it would be better if published by McGraw Hill, Prentice-Hall, Springer, or any other good publisher. Note that I'm interested here in programming with C++ only.

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• Read data from a Gif

  - by kojof

  hi, i have a requirement to read data from a gif. The gif is exported from a Bloomberg terminal and contains Stock Prices. Is there anyway of reading the Stock Prices off this gif? I'd prefer to do it in C#, but if there is any other programming language that is recommended, i would be grateful if you can share that with me. regards

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• Why is this std::bind not converted to std::function?

  - by dauphic

  Why is the nested std::bind in the below code not implicitly converted to an std::function<void()> by any of the major compilers (VS2010/2012, gcc, clang)? Is this standard behavior, or a bug? #include <functional> void bar(int, std::function<void()>) { } void foo() { } int main() { std::function<void(int, std::function<void()>)> func; func = std::bind(bar, 5, std::bind(foo)); std::cin.get(); return 0; }

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• How to change text color on Macintosh? My code uses TESetText and TEUpdate for drawing.

  - by Manoj Awasthi

  A naive question - i am a novice on mac programming. How to change text color on Macintosh? My code uses TESetText and TEUpdate for drawing. PS - Mac is really really badly documented.

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• Switching Views

  - by Stephen

  I have two XIb files and I need to switch between them with the swipe of a finger, like the native iphone weather app. does anyone know how to do this. please give some sample code if possible. thank you. P.S I am programming in Objective-C.

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• What's the Difference Between These Two Ruby Class Initialization Definitions?

  - by michaelmichael

  I'm working through a book on Ruby, and the author used a slightly different form for writing a class initialization definition than he has in previous sections of the book. It looks like this: class Ticket attr_accessor :venue, :date def initialize(venue, date) self.venue = venue self.date = date end end In previous sections of the book, it would've been defined like this: class Ticket attr_accessor :venue, :date def initialize(venue, date) @venue = venue @date = date end end Is there any functional difference between using the setter method, as in the first example, vs. using the instance variable as in the second? They both seem to work. Even mixing them up works: class Ticket attr_accessor :venue, :date def initialize(venue, date) @venue = venue self.date = date end end

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• How can i attach to a process using gdbvim?

  - by thamurath

  Hi, I use Vim as primary IDE for programming, with some plugins i have a good environment but for a single point: debugging. I have recompiled Vim to use vimgdb, and it works, but the problem is that i need to attach to a process started by a root user so i have to use sudo to do it.... How can i do this with vimgdb? Thanks in advance.

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• What am I doing wrong? (Simple Assembly Loop)

  - by sunnyohno

  It won't let me post the picture. Btw, Someone from Reddit.programming sent me over here. So thanks! TITLE MASM Template ; Description ; ; Revision date: INCLUDE Irvine32.inc .data myArray BYTE 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 .code main PROC call Clrscr mov esi, OFFSET myArray mov ecx, LENGTHOF myArray mov eax, 0 L1: add eax, [esi] inc esi loop L1 call WriteInt exit main ENDP END main Results in: -334881242

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• Number of Parameter Passed to Function?

  - by Asim Sajjad

  I want to know how many parameters can be passed to function, I mean what is good programming practice, regarding passing the parameters to function?

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• Why C/C++ have memory issue?

  - by LinuxNewbie

  I have read lots of programmers saying and writing when programming in C/C++ there are lots of issue related to memory. I am planning to learn to program in C/C++. I have beginner knowledge of C/C++ and I want to see some short sample why C/C++ can have issues with memory management. Please Provide some samples.

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• Well written open source java projects

  - by Algorist

  I want to improve my design and programming skills by understanding design & code of open source projects. I downloaded hadoop,groovy but they are very difficult to follow. I am not having a clue of how to follow this code without having a high level overview of the design. Any suggestions?? Thank you.

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• Interesting task using random numbers only

  - by psihodelia

  Given any number of the random real numbers from the interval [0,1] is there exist any method to construct a floating point number with zero decimal part? Your algorithm can use only random() function calls and no variables or constants. No constants and variables are allowed, no type casting is allowed. You can use for/while, if/else or any other programming language operands.

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