What is Interface Definition Language (IDL)

Interface Definition Language IDL is a computer language used to describe the interface of software components. IDL describes the interface in a neutral way, so that objects running on different platforms and programs written in different languages ​​​​can Communicate with each other; for example, one component is written in C and another component is written in Java.

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IDL (Interface Definition Language, interface definition language), also called interface description language, is a language that describes the interface of software components specification. IDL is described in a neutral language and enables software components (written in different languages) to communicate with each other. IDL is usually used in RPC (Remote Procedure Call, remote procedure call) software. IDL provides a "bridge" to connect different systems.

IDL is usually used to call software remotely. In this case, object components on different operating systems are generally called by remote client terminals, and these object components may be written in different computer languages. IDL establishes a communication bridge between two different operating systems.

Software systems developed on the basis of IDL include Sun's ONC RPC, The Open Group's Distributed Computing Environment, IBM's System Object Model, Object Management Group's CORBA, and SOAP (for Web services).

Typical interface definition language

• IDL specification language, the original Interface Description Language.

• Microsoft Interface Definition Language

• HIDL (HAL Interface Definition Language, Hardware Abstraction Layer Interface Description Language), used for Android operating system 8.0 and above

• Open Service Interface Definitions

• ##Platform-Independent Component Modeling Language

• Simple Object Access Protocol (SOAP)

• WDDX

• XML-RPC, the predecessor of SOAP

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