ACM SIGPLAN Notices
ACM SIGAPL APL Quote Quad
An object oriented extension to APL
APL '87 Proceedings of the international conference on APL: APL in transition
The APL 90 project: new directions in APL interpreters technology
APL '85 Proceedings of the international conference on APL: APL and the future
ACM SIGAPL APL Quote Quad
Shared functions and variables as an aid to applications design
APL '84 Proceedings of the international conference on APL
Nonpositional indexing for a relational data base
APL '82 Proceedings of the international conference on APL
Representations for enclosed arrays
APL '81 Proceedings of the international conference on APL
A future APL: examples and problems
APL '89 Conference proceedings on APL as a tool of thought
Object oriented programming in AIDA APL
APL '89 Conference proceedings on APL as a tool of thought
APL '89 Conference proceedings on APL as a tool of thought
A preferable look—APL in window-based environments
APL '90 Conference proceedings on APL 90: for the future
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Traditionally, APL arrays have three parts: shape, type and elements. This notion is extended to include user defined and additional primitive parts. Functions are defined to manipulate parts. Keyed indexing is introduced to define parts, and also as an enhancement in its own right.In this paper, the concept of parts of arrays is introduced at a general level. The definition of parts is illustrated and some examples of their use is given.