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• Where can find examples and tutorials for Perl's Net::Pcap module?

  - by dan

  Could someone provide a good documentation / tutorial/ PDFs/ reference to book link about Net::Pcap in addtion to the module documentation and this Perl and Net::Pcap article on PerlMonks?

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• Perl CGI tutorial recommendations

  - by ungalnanban

  I am going to learn Perl CGI. Please suggest a good URL or book for a CGI tutorial.

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• how do free online OCR programs compare to commercial ones?

  - by aslum

  How much better would commercial OCR software be compared to the stuff that's available online for free? More specifically: Reading text in pictures (things like book covers etc...)

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• using LARGE_INTEGER gives me back error error C2679: '=' binary no operator found which takes a right-hand operand

  - by rekotc

  i have the following code: QueryPerformanceCounter(&timeStart); winMain::render(); //do stuff QueryPerformanceCounter(&timeEnd); numCounts = ( timeEnd.QuadPart - timeStart.QuadPart); All the 3 variables are declared as LARGE_INTEGER, the code should work since im following a book example, but i get: error C2679: '=' binary no operator found which takes a right-hand operand of type LONGLONG it might be '_LARGE_INTEGER &_LARGE_INTEGER::operator =(const _LARGE_INTEGER &)' 1 durante la ricerca di corrispondenza con l'elenco di argomenti '(LARGE_INTEGER, LONGLONG)'

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• Please suggest some good books about image analysis or image processing

  - by erjik

  I wish to become a good specialist in image processing, for example I want to know how to find barcodes or car plates and so on, anything that i think about, an apple on image. And then to do something more, for example decode the barcode or just write - this is an apple. So do you know a good book or online course?

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• Why does Java uses heap for memory allocation?

  - by happysoul

  I just read this statement in a java book saying Objects in java reside on a heap. Is a heap used because it is the best way to store data and retrieve data fast ? I only have an idea about data structures being a beginner. I mean why not stack or something else ?

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• New to HBase. I need help as I'm new to HBase, but use to SQL.

  - by WackoMax

  Hi there I'm use to SQL, but I need to read data from a HBase table. Any help on this would be great. A book or maybe just some sample code to read from the table. Someone said using a scanner would do the trick, but I do not know how to use it.

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• What is the one programming skill you have always wanted to master but haven't had time?

  - by KevDog

  For me, I've always wanted to finish the O'Reilly "Mastering Regular Expressions" book. When I need a Regexp, I manage to get the one I need eventually, but it takes more effort than it should. Learning a specific technology or language always seems to bubble up ahead of this.

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• When should I use print instead of echo in PHP?

  - by Rob

  I understand that echo is slightly faster, and print can be used as a function, but I've been reading an e-book on PHP, and the writer is using print, instead of echo, to output very simple text. print "Your name is $name\n"; So my question is, when would it be appropriate for me to use print as opposed to echo?

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• "entering link in browser" to "finding route to host" how it works?

  - by Algorist

  Hi, Is there a wiki or book, which explains what happens when user enters a link in the browser, and how the dns is resolved, how the router finds the route to the host etc.. I am mainly interested in routing the packets. Thank you

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• C: performance of assignments, binary operations, et cetera...

  - by Shinka

  I've heard many things about performance in C; casting is slow compared to normal assignments, functional call is slow, binary operation are much faster than normal operations, et cetera... I'm sure some of those things are specific to the architecture, and compiler optimization might make a huge difference, but I would like to see a chart to get a general idea what I should do and what I should avoid to write high-performance programs. Is there such a chart (or a website, a book, anything) ?

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• How to automate detection of out of order tab navigation in Qt dialogs?

  - by WilliamKF

  Typically, a dialog wishes to have tab navigation proceed in an orderly fashion through a dialog that roughly corresponds to the order of reading a book. When new fields are added to a dialog by engineers on a team, the new widgets can often not be inserted in tab correct order. Can anyone think of a way to automate the detection of out of tab navigation order widgets within a dialog?

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• What does the C# operator => mean?

  - by Mr. Mark

  Answers to a recent post (Any chances to imitate times() Ruby method in C#?) use the = operator in the usage examples. What does this operator do? I can't locate it in my C# book, and it is hard to search for symbols like this online. (I couldn't find it.)

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• Expression Blend 3, solution not supported

  - by Jova

  I'm trying to open a silverlight 4 application solution in Expression Blend 3. However, Blend says that the solution is not supported. Is there something I'm missing? I'm following an example in the book Microsoft Silverlight 4 Business Application Development.

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• What's the difference between single and double quotes in Objective-C?

  - by Alex Mcp

  I'm working through a book exercise to generate some random serial number, and here's my function: NSString *randomSerialNumber = [NSString stringWithFormat:@"%c%c%c%c%c", '0' + random() % 10, 'A' + random() % 26, '0' + random() % 10, 'A' + random() % 26, '0' + random() % 10]; This works and has an output like: 2J6X7. But before, the 0s and As I had wrapped in double quotes, and an example output was 11764iÒ˜. What did I do wrong my first time around, and why did using single quotes fix it?

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• Database Patterns

  - by Onorio Catenacci

  Does anyone know of papers/books/etc. that document patterns for databases? For example, one common rule of thumb is that every table should have a primary key and that the key should be devoid of information content. So I was wondering if anyone had written a book or published papers regarding design patterns for designing relational databases?

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• Is there a standout JavaScript and CSS tutorial or reference?

  - by user225626

  The 'K&R', 'Red Book', 'Camel' of JavaScript and CSS? When you see a site like www.cmegroup.com or www.gs.com, what reading material do the developers likely have on their shelves?

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• Use Shakespeare-text and external file

  - by Adam

  How can I convert the below example to use an external file instead of the embedded lazy text quasi quotes? {-# LANGUAGE QuasiQuotes, OverloadedStrings #-} import Text.Shakespeare.Text import qualified Data.Text.Lazy.IO as TLIO import Data.Text (Text) import Control.Monad (forM_) data Item = Item { itemName :: Text , itemQty :: Int } items :: [Item] items = [ Item "apples" 5 , Item "bananas" 10 ] main :: IO () main = forM_ items $ \item -> TLIO.putStrLn [lt|You have #{show $ itemQty item} #{itemName item}.|] This is from the yesod online book.

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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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• ASP.NET Free Online E-books or tutorials

  - by the_drow

  I need to learn programming ASP.NET with C# but I can't find a good online book to do so. Is there an ASP.NET equivalent to Diving into python? All of the books are quite expensive. I already know Java and C++, are there any major differences between them and C#? If so are there materials that cover only the differences and what I should learn?

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• F# - This code isn't compiled for me

  - by stacker

  This code isn't compiled for me: let countDown = [5L .. -1L .. 0L];; I have a book that says it should return this: val countDown : int list = [5L; 4L; 3L; 2L; 1L; 0L]

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• PHP: Object Oriented Programming -> Operator

  - by oman9589

  So I've been reading through the book PHP Solutions, Dynamic Web Design Made Easy by David Powers. I read through the short section on Object Oriented PHP, and I am having a hard time grasping the idea of the - operator. Can anyone try to give me a solid explanation on the - operator in OOP PHP? Example: $westcost = new DateTimeZone('America/Los_Angeles'); $now->setTimezone($westcoast); Also,a more general example: $someObject->propertyName Thanks

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• How can I learn Android?

  - by Vijay Kansal

  I am a newcomer to Android. I know the C And C++ programming languages, but I do not know Java . I want to learn Android right from basics, but I could not find any relevant link or e-book that can help me. Can I begin to learn Android without knowing Java or should i go to learn Java first? From where should I learn Android which should be easy to grasp and learn for a newcomer like me.

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• void foo(int &x) -> Ruby? Passing integers by reference?

  - by Earlz

  Hello, as a way to spice up my C++ programming homework, I've decided to instead of typing the C++ from the book onto my computer, instead reforming it in Ruby. Yes it's a bit silly, but I'm bored. Anyway, I'm having trouble converting this kind of function to Ruby void swap(int &a,int &b){ int c=b; b=a; a=c } What would the equivalent ruby code looking inside a function ?

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• The C++ Programming Language, 3rd edition solutions?

  - by Tool

  Are there any online solutions to exercises in that book? For the C bible, there's http://clc-wiki.net/wiki/K&R2_solutions, so i tought there may be the same thing for c++ bible but i couldnt really find it.

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