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1. Top results related to generic programming wikipedia 2019

   • generic programming in java

     Top Answer

     Answered Nov 29, 2009 · 11 votes

     If the above were true, then you could take your collection of managers, treat it as a collection of employees, and then put any employee into a collection of managers (i.e. not just a manager, but a (say) graduate trainee, a CIO etc.)

     It's a little counter-intuitive. An orange is a fruit. A list of oranges is not a list of fruit (otherwise you could put an apple in it). There's a concise explanation in the Java Generics Tutorial.

     Other Answers

     Answered Nov 29, 2009 · 3 votes

     This is called covariance and contravariance. The issue you just discovered is a traditional problem of type systems. The corresponding wikipedia page discusses this issue in Java. It's worth taking some time to understand these issues correctly has it also relates also to method overriding (since JDK5, you can indeed change the return type of an overriden method as long as it's covariant).

     Other Answers

     Answered Nov 29, 2009 · 2 votes

     Just imagine your code would be legal. (Let Apple be a subclass of Fruit)

     Collection<Fruit> apples = { new Apple() };Collection<Apple> fruit = apples;-fruit.add(new Banana()); // Inserting a banana into a list of apples // Breaks type safety-

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     1/5

   • Generic programming vs. Metaprogramming

     Top Answer

     Answered Oct 14, 2010 · 49 votes

     • Programming: Writing a program that creates, transforms, filters, aggregates and otherwise manipulates data.
     • Metaprogramming: Writing a program that creates, transforms, filters, aggregates and otherwise manipulates programs.
     • Generic Programming: Writing a program that creates, transforms, filters, aggregates and otherwise manipulates data, but makes only the minimum assumptions about the structure of the data, thus maximizing reuse across a wide range of datatypes.

     As was already mentioned in several other answers, the distinction can be confusing in C++, since both Generic Programming and (static/compile time) Metaprogramming are done with Templates. To confuse you even further, Generic Programming in C++ actually uses Metaprogramming to be efficient, i.e. Template Specialization generates specialized (fast) programs from generic ones.

     Also note that, as every Lisp programmer knows, code and data are the same thing, so there really is no such thing as "metaprogramming", it's all just programming. Again, this is a bit hard to see in C++, since you actually use two completely different programming languages for programming (C++, an imperative, procedural, object-oriented language in the C family) and metaprogramming (Templates, a purely functional "accidental" language somewhere in between pure lambda calculus and Haskell, with butt-ugly syntax, since it was never actually intended to be a programming language.)

     Many other languages use the same language for both programming and metaprogramming (e.g. Lisp, Template Haskell, Converge, Smalltalk, Newspeak, Ruby, Ioke, Seph).

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     2/5

   • generic programming in java with dynamic nature and fully customizable

     Top Answer

     Answered Sep 02, 2014 · 3 votes

     This is a surprisingly common, and an extremely bad idea. Sounds like you're heading towards the Inner Platform anti pattern.

     It seems good when you hear it for the first time (or if you're a manager), but the result is a system that tries to do everything, but ends up doing nothing well.

     The database becomes very inefficient and corruption prone as well. I've had the unfortunate privilege to see this in action.

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     3/5

   • Generic pattern problem in C programming language

     Top Answer

     Answered Jun 20, 2022 · 4 votes

     Let's give the line numbers.

     CCCCCC Row y=2 CBBBBC Row y=1 CBAABC Row y=0 CBAABC Row y=0 CBBBBC Row y=1 CCCCCC Row y=2Col x=210012

     And let's give the symbol numbers

     A B C ...0 1 2 ...-

     Then it becomes easy: At row y, col x, we want to print the symbol corresponding to the larger of y and x. All that's left to do is build the loops.

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     4/5

   • Wikipedia : Java library to remove wikipedia text markup removal

     Top Answer

     Answered Nov 28, 2018 · 11 votes

     Do it in two steps:

     • let some existing tool convert the MediaWiki mark-up into plain HTML;
     • convert the plain HTML into text.

     The following demo:

     import net.java.textilej.parser.MarkupParser;import net.java.textilej.parser.builder.HtmlDocumentBuilder;import net.java.textilej.parser.markup.mediawiki.MediaWikiDialect;import javax.swing.text.html.HTMLEditorKit;import javax.swing.text.html.parser.ParserDelegator;import java.io.StringReader;import java.io.StringWriter;public class Test { public static void main(String[] args) throws Exception { String markup = "This is ''italic'' and '''that''' is bold. \n"+ "=Header 1=\n"+ "a list: \n* item A \n* item B \n* item C"; StringWriter writer = new StringWriter(); HtmlDocumentBuilder builder = new HtmlDocumentBuilder(writer); builder.setEmitAsDocument(false); MarkupParser parser = new MarkupParser(new MediaWikiDialect()); parser.setBuilder(builder); parser.parse(markup); final String html = writer.toString(); final StringBuilder cleaned = new StringBuilder(); HTMLEditorKit.ParserCallback callback = new HTMLEditorKit.ParserCallback() { public void handleText(char[] data, int pos) { cleaned.append(new String(data)).append(' '); } }; new ParserDelegator().parse(new StringReader(html), callback, false); System.out.println(markup); System.out.println("---------------------------"); System.out.println(html); System.out.println("---------------------------"); System.out.println(cleaned); }}

     produces:

     This is ''italic'' and '''that''' is bold. =Header 1=a list: * item A * item B * item C---------------------------<p>This is <i>italic</i> and <b>that</b> is bold. </p><h1 id="Header1">Header 1</h1><p>a list: </p><ul><li>item A </li><li>item B </li><li>item C</li></ul>---------------------------This is italic and that is bold. Header 1 a list: item A item B item C

     Where do you download the java packages you are importing?

     Here: Web Archive link of download.java.net/maven/2/net/java/textile-j/2.2

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     5/5

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2. en.wikipedia.org › wiki › Generic_programmingGeneric programming - Wikipedia

   en.wikipedia.org › wiki › Generic_programming

   • Cached

   Generic programming is a style of computer programming in which algorithms are written in terms of data types to-be-specified-later that are then instantiated when needed for specific types provided as parameters.

3. vadzimv.dev › 2019/10/01 › generic-programming-partGeneric Programming - Introduction | vadzimv Dev Blog

   vadzimv.dev › 2019/10/01 › generic-programming-part

   • Cached

   Oct 1, 2019 · Introduction. According to the Wikipedia: Generic programming is a style of computer programming in which algorithms are written in terms of types to-be-specified-later that are then instantiated when needed for specific types provided as parameters. What does it mean?

4. stackoverflow.com › questions › 77632What is cool about generics, why use them? - Stack Overflow

   stackoverflow.com › questions › 77632

   • Cached

   With generics, we can actually do away with subclassing and use parametric polymorphism instead. For example, consider a parameterised (generic) class used to calculate hash codes for any type. Instead of overriding Object.hashCode (), we would use a generic class like this: public final class Hash<A> {.

   Code sample

   class MyList<T> {

     T get(int index) { ... }

   }

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5. oswalt.dev › 2020 › 08What Is Generic Programming? | Matt Oswalt

   oswalt.dev › 2020 › 08

   • Cached

   Aug 4, 2020 · Generic programming allows you to do exactly this in code, but without sacrificing the inherent safety of a statically typed language. It gives us primitives to declare “placeholder types” that allow us to focus less on the specific types that may be used or declared by other portions of the codebase, but rather focus on these higher-level ...

6. www.generic-programming.org › about › introAn Introduction to Generic Programming

   www.generic-programming.org › about › intro

   • Cached

   May 27, 2011 · Generic Programming is a programming paradigm for developing efficient, reusable software libraries. Pioneered by Alexander Stepanov and David Musser, Generic Programming obtained its first major success when the Standard Template Library became part of the ANSI/ISO C++ standard.

7. en.wikipedia.org › wiki › C_Sharp_(programming_language)C Sharp (programming language) - Wikipedia

   en.wikipedia.org › wiki › C_Sharp_(programming_language)

   • Cached

   C# (/ ˌ s iː ˈ ʃ ɑːr p / see SHARP) is a general-purpose high-level programming language supporting multiple paradigms. C# encompasses static typing,: 4 strong typing, lexically scoped, imperative, declarative, functional, generic,: 22 object-oriented (class-based), and component-oriented programming disciplines.

8. learn.saylor.org › mod › bookGeneric Programming: 1. Introduction | Saylor Academy

   learn.saylor.org › mod › book

   • Cached

   Introduction. Generic programming is a style of computer programming in which algorithms are written in terms of types to-be-specified-later that are then instantiated when needed for specific types provided as parameters.