Computerzworld » Programming http://computerzworld.com Explore the world of computers. Thu, 21 Jul 2011 20:27:22 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Wirth languages http://computerzworld.com/wirth-languages/ http://computerzworld.com/wirth-languages/#comments Tue, 08 Apr 2008 16:55:00 +0000 admin http://computerzworld.com/?p=407 Continue reading →]]> Computer scientist Niklaus Wirth designed and implemented several influential languages.

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]]> http://computerzworld.com/wirth-languages/feed/ 0 XML-based languages http://computerzworld.com/xml-based-languages/ http://computerzworld.com/xml-based-languages/#comments Tue, 08 Apr 2008 16:55:00 +0000 admin http://computerzworld.com/?p=408 Continue reading →]]> These are languages based on or that operate on XML. Although the big-boy equivalents of Oracle/PostgreSQL/MSSQL don’t yet exist for XML, there are languages to navigate through it and its more tree-oriented structure.

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]]> http://computerzworld.com/xml-based-languages/feed/ 0 Synchronous languages http://computerzworld.com/synchronous-languages/ http://computerzworld.com/synchronous-languages/#comments Tue, 08 Apr 2008 16:54:00 +0000 admin http://computerzworld.com/?p=404 Continue reading →]]> Synchronous programming languages are optimized for programming reactive systems, systems that are often interrupted and must respond quickly. Many such systems are also called realtime systems, and are found often in embedded uses. Examples:

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]]> http://computerzworld.com/synchronous-languages/feed/ 0 Syntax handling languages http://computerzworld.com/syntax-handling-languages/ http://computerzworld.com/syntax-handling-languages/#comments Tue, 08 Apr 2008 16:54:00 +0000 admin http://computerzworld.com/?p=405
  • GNU bison (FSF’s version of Yacc)
  • GNU Flex (FSF’s version of Lex)
  • lex (Lexical Analysis, from Bell Labs)
  • M4
  • yacc (yet another compiler compiler, from Bell Labs)
  • javacc
  • Coco/R (EBNF with semantics)

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    ]]>     http://computerzworld.com/syntax-handling-languages/feed/ 0     Visual languages http://computerzworld.com/visual-languages/ http://computerzworld.com/visual-languages/#comments Tue, 08 Apr 2008 16:54:00 +0000 admin http://computerzworld.com/?p=406 Continue reading →]]> Visual programming languages let users specify programs in a two-(or more)-dimensional way, instead of as one-dimensional text strings, via graphic layouts of various types.

    Some dataflow programming languages are also visual languages.

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    ]]>     http://computerzworld.com/visual-languages/feed/ 0     Stack-based languages http://computerzworld.com/stack-based-languages/ http://computerzworld.com/stack-based-languages/#comments Tue, 08 Apr 2008 16:53:00 +0000 admin http://computerzworld.com/?p=403 Stack-based languages are a type of data-structured language that are based upon the stack data structure.

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    ]]>     http://computerzworld.com/stack-based-languages/feed/ 0     Rule-based languages http://computerzworld.com/rule-based-languages/ http://computerzworld.com/rule-based-languages/#comments Tue, 08 Apr 2008 16:51:00 +0000 admin http://computerzworld.com/?p=401 Continue reading →]]> Rule-based languages instantiate rules when activated by conditions in a set of data. Of all possible activations, some set will be selected and the statements belonging to those rules will be executed. Examples of rule-based languages include:

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    ]]>     http://computerzworld.com/rule-based-languages/feed/ 0     Scripting languages http://computerzworld.com/scripting-languages/ http://computerzworld.com/scripting-languages/#comments Tue, 08 Apr 2008 16:51:00 +0000 admin http://computerzworld.com/?p=402 Continue reading →]]> “Scripting language” has two apparently different, but in fact similar meanings. In a traditional sense, scripting languages are designed to automate frequently used tasks that usually involve calling or passing commands to external programs. Many complex application programs allow users to implement custom functions by providing them with built-in languages. Those which are of interpretive type, are often called scripting languages.

    More recently many of these applications have chosen to “build in” traditional scripting languages, such as Perl or Visual Basic, but there are quite a few “native” scripting languages still in use. Many scripting languages are compiled to bytecode and then this (usually) platform independent bytecode is run through a virtual machine (compare to Java).

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    ]]>     http://computerzworld.com/scripting-languages/feed/ 0     Reflective languages http://computerzworld.com/reflective-languages/ http://computerzworld.com/reflective-languages/#comments Tue, 08 Apr 2008 16:50:00 +0000 admin http://computerzworld.com/?p=400 Continue reading →]]> Reflective languages let programs examine and possibly modify their high level structure at runtime. This is most common in high-level virtual machine programming languages like Smalltalk, and less common in lower-level programming languages like C. Languages and platforms supporting reflection:

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    ]]>     http://computerzworld.com/reflective-languages/feed/ 0     Procedural languages http://computerzworld.com/procedural-languages/ http://computerzworld.com/procedural-languages/#comments Tue, 08 Apr 2008 16:46:00 +0000 admin http://computerzworld.com/?p=399 Continue reading →]]> Procedural programming languages are based on the concept of the unit and scope (the data viewing range of an executable code statement). A procedural program is composed of one or more units or modules, either user coded or provided in a code library; each module is composed of one or more procedures, also called a function, routine, subroutine, or method, depending on the language. Examples of procedural languages include:

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