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Language binding

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In computing, a binding from a programming language to a library
Library (computer science)
In computer science, a library is a collection of resources used to develop software. These may include pre-written code and subroutines, classes, values or type specifications....

 or OS
Operating system
An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...

 service is an API
Application programming interface
An application programming interface is a source code based specification intended to be used as an interface by software components to communicate with each other...

 providing that service in the language.

Many software libraries
Library (computer science)
In computer science, a library is a collection of resources used to develop software. These may include pre-written code and subroutines, classes, values or type specifications....

 are written in systems
System programming language
System programming languages are programming languages that are statically typed, allow arbitrarily complex data structures, are compiled, and are meant to operate largely independently of other programs. Prototypical system programming languages are C and Modula-2...

 programming language
Programming language
A programming language is an artificial language designed to communicate instructions to a machine, particularly a computer. Programming languages can be used to create programs that control the behavior of a machine and/or to express algorithms precisely....

s such as C
C (programming language)
C is a general-purpose computer programming language developed between 1969 and 1973 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system....

 or C++
C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language. It is regarded as an intermediate-level language, as it comprises a combination of both high-level and low-level language features. It was developed by Bjarne Stroustrup starting in 1979 at Bell...

. To use these libraries from another (usually higher-level) language such as Java
Java (programming language)
Java is a programming language originally developed by James Gosling at Sun Microsystems and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities...

, Common Lisp, Python
Python (programming language)
Python is a general-purpose, high-level programming language whose design philosophy emphasizes code readability. Python claims to "[combine] remarkable power with very clear syntax", and its standard library is large and comprehensive...

 or Lua, a binding to the library must be created in that language possibly requiring the recompilation of the language's code depending on the amount of modification necessary; however most languages offer some sort of foreign functions interface like Python's ctypes and ecl's cffi, and uffi.

Software reuse is a major motivation for creating library bindings, rather than reimplementing the library in several languages. Another is the impossibility of implementing certain algorithm
In mathematics and computer science, an algorithm is an effective method expressed as a finite list of well-defined instructions for calculating a function. Algorithms are used for calculation, data processing, and automated reasoning...

s efficiently in high-level languages.

See also

  • Porting
    In computer science, porting is the process of adapting software so that an executable program can be created for a computing environment that is different from the one for which it was originally designed...

  • Foreign function interface
    Foreign function interface
    A foreign function interface is a mechanism by which a program written in one programming language can call routines or make use of services written in another. The term comes from the specification for Common Lisp, which explicitly refers to the language features for inter-language calls as...

  • Calling convention
    Calling convention
    In computer science, a calling convention is a scheme for how subroutines receive parameters from their caller and how they return a result; calling conventions can differ in:...

  • Name mangling
    Name mangling
    In compiler construction, name mangling is a technique used to solve various problems caused by the need to resolve unique names for programming entities in many modern programming languages....

  • Application programming interface
    Application programming interface
    An application programming interface is a source code based specification intended to be used as an interface by software components to communicate with each other...

  • Application Binary Interface
    Application binary interface
    In computer software, an application binary interface describes the low-level interface between an application program and the operating system or another application.- Description :...

  • Comparison of application virtual machines
    Comparison of Application Virtual Machines
    This article lists some software virtual machines that are typically used for allowing application bytecode to be portably run on many different computer architectures and operating systems. The application is usually run on the computer using an interpreter or just-in-time compilation...

  • SWIG
    SWIG is an open source software tool used to connect computer programs or libraries written in C or C++ with scripting languages such as Lua, Perl, PHP, Python, R, Ruby, Tcl, and other languages like C#, Java, Modula-3, Objective Caml, Octave, and Scheme...

     - open-source interfaces bindings generator from many languages to many languages
  • Portable object
    Portable object (computing)
    In distributed programming, a portable object is an object which can be accessed through a normal method call while possibly residing in memory on another computer. It is portable in the sense that it moves from machine to machine, irrespective of operating system or computer architecture...

     cross language cross platform Object Model definition
    Chorba , ciorbă , shurpa , shorpo , or sorpa is one of various kinds of soup or stew found in national cuisines across Middle East...

     Common Object Request Broker Architecture, cross language cross platform object model
  • Freedesktop.org
    freedesktop.org is a project to work on interoperability and shared base technology for free software desktop environments for the X Window System on Linux and other Unix-like operating systems. It was founded by Havoc Pennington from Red Hat in March 2000.The organisation focuses on the user....

    In computing, D-Bus is a simple inter-process communication open-source system for software applications to communicate with one another. Heavily influenced by KDE2–3's DCOP system, D-Bus has replaced DCOP in the KDE 4 release. An implementation of D-Bus supports most POSIX operating...

     current open cross language cross platform Object Model
    XPCOM is a cross-platform component model from Mozilla. It is similar to Microsoft COM and CORBA. It has multiple language bindings and IDL descriptions so programmers can plug their custom functionality into the framework and connect it with other components.-The model:XPCOM is one of the main...

     Mozilla applications cross-platform Component Object Model
  • COM
    Component Object Model
    Component Object Model is a binary-interface standard for software componentry introduced by Microsoft in 1993. It is used to enable interprocess communication and dynamic object creation in a large range of programming languages...

     Microsoft Windows only cross-language Object Model
  • DCOM
    Distributed component object model
    Distributed Component Object Model is a proprietary Microsoft technology for communication among software components distributed across networked computers. DCOM, which originally was called "Network OLE", extends Microsoft's COM, and provides the communication substrate under Microsoft's COM+...

     Distributed COM, extension making COM able to work in networks
  • Common Language Infrastructure
    Common Language Infrastructure
    The Common Language Infrastructure is an open specification developed by Microsoft and standardized by ISO and ECMA that describes the executable code and runtime environment that form the core of the Microsoft .NET Framework and the free and open source implementations Mono and Portable.NET...

     current .NET cross-language cross-platform Object Model (managed languages only)
  • Wrapper function
    Wrapper function
    A wrapper function is a function in a computer program whose main purpose is to call a second function with little or no additional computation. This is also known as method delegation. Wrapper functions can be used for a number of purposes....

External links

http://www.open-std.org/JTC1/SC22/WG11/ ISO standard for language bindings