Extending modular languages with persistent data

A method for introducing data persistence in modular languages is presented; the method is based on an extension of the module concept that performs in the framework of an object-oriented paradigm. Application of the method to Modula-2, a language that supports modularity and encapsulation, is described. The method, however, is more general, being a simple and powerful approach to introducing data persistence which can be applied to existing languages or considered in the design of new ones.<
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