Namespaces semipermeable membranes for APL applications
APL '81 Proceedings of the international conference on APL
Improved security in APL applications packages
APL '74 Proceedings of the sixth international conference on APL
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By the term “applications package” is meant a set of interacting APL functions and variables that a user calls, along with certain “background” functions and data that are only called indirectly. If there is a proprietary interest in the package, then it is necessary to devise techniques to assure the security of the package. An interpreted language like APL might be thought to pose severe security problems, since (unlike a compiled language such as FORTRAN) the source code is always somewhere nearby. However, with proper design, reasonable security (consistent with the value of the goods protected) can be achieved. This paper deals with security for packages installed both on private computers, and on commercial time-sharing systems, with the emphasis on the latter.