Valence and precedence in APL extensions
APL '83 Proceedings of the international conference on APL
Designing and implementing an array theory incorporating abstract datatypes
APL '83 Proceedings of the international conference on APL
Nonpositional indexing for a relational data base
APL '82 Proceedings of the international conference on APL
Carrier arrays: an extension to apl
Carrier arrays: an extension to apl
APL '88 Proceedings of the international conference on APL
Extending structure, type, and expression in APL2
APL '91 Proceedings of the international conference on APL '91
The foundations of suitability of APL2 for music
IBM Systems Journal
Untying the Gordian knot: agreement in J
APL '95 Proceedings of the international conference on Applied programming languages
Control of structure and evaluation
APL '85 Proceedings of the international conference on APL: APL and the future
Structural experiments with arrays of functions
APL '85 Proceedings of the international conference on APL: APL and the future
Function assignment and arrays of functions
APL '84 Proceedings of the international conference on APL
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In some applications a subset of the dimensions of an array is used to define a framework which holds instances of cells defined by the complementary subset. A rank four array might be viewed as a page containing several rows of graphs. This structure could be used to apply a rotate function to each of the graphs. Existing proposals to implement a general scheme of program controlled distribution of functions over data arrays are compared. Nested arrays are suggested as the preferred technique. The analogy between the EACH operator and the ENCLOSE function in APL2/NARS leads to remarks on arrays of functions. In that context function distribution becomes a special case of scalar extension.