| IBM (1991) OS/2 2.0 Technical Library, System Object Model and Reference, Version 2.00, IBM. |
....to mention some recent industry initiatives. Although, efforts such as CORBA [OMG, 91] effectively separate out implementations from interfaces, they are mainly geared towards facilitating object interactions. Thus, objects created by two different languages can be made to cooperate as in IBM SOM [IBM, 91] or object interactions can be transparently made to span machine boundaries. It is possible to associate some flexible properties to CORBA compliant software through the use of meta objects and indirections. However, very little support is provided for structuring object systems for ....
IBM (1991) OS/2 2.0 Technical Library, System Object Model and Reference, Version 2.00, IBM.
....source files as output. The major differences between them are: Implementation section syntax Guidelines for interface specification files Special meanings of certain names Superset of the IDL C mappings generated The only syntactical extension to IDL is the addition of an implementation section [IBM, 1991]. This section allows the characterization of implementations. That is, if some characteristic distinguishes implementations, this section lists the choices. Consider the example of a simple communication substrate, where each implementation maps to exactly one hardware link. Choices of ethernet, ....
IBM (1991) OS/2 2.0 Technical Library, System Object Model and Reference, Version 2.00, IBM.
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IBM (1991) OS/2 2.0 Technical Library, System Object Model and Reference, Version 2.00, IBM.
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IBM (1991) OS/2 2.0 Technical Library, System Object Model and Reference, Version 2.00, IBM.
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