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QuoteRef: palmJ5_1973
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Topic:
initialization of data
Topic:
memory management by garbage collection
Topic:
hypertext links
Topic:
pointers to data
ThesaHelp:
references p-r
Topic:
notation for program clusters
Topic:
Thesa data structures
Topic:
type inheritance as reuse
Topic:
object-oriented fields
Topic:
type reflection and introspection
Topic:
non-exclusive data type
Topic:
object-oriented classes
Topic:
generic operations and polymorphism
Topic:
object-oriented objects
Topic:
access to objects by a path
Topic:
object-defined names
Topic:
names defined by context
Topic:
variable as function that accesses an object's value
Topic:
software portability
Reference
Palme, J., "Simula as a tool for extensible program products", in Bates, D. (ed.), State of the Art Report on Commercial Language Systems, Infotech International, 1974. Google
Other Reference
NTIS PB-221 593, May 1973
QuoteRef: palmJ5_1973 ;;6 structures by class with accessing and modification procedures eg Class person (public components), type-declarations, begin private-components (eg links internal info), procedure definitions (eg integer procedure age; age := yearnow -birthyear), initialization. routine(eg links person into a doubly linked chain) QuoteRef: palmJ5_1973 ;;6 Simula uses :- for linked to QuoteRef: palmJ5_1973 ;;9 all data initialized- by allocation (eg New person ("john", 1936, male) by initialization routine, or zero for data and nil for pointers QuoteRef: palmJ5_1973 ;;9 Automatic garbage collection of non-referenced structures
12 ;;Quote: in Simula, can extend a class by appending information
14 ;;Quote: in Simula, the attributes available depends on the object's class
15 ;;Quote: before using an object as a different class, need to check for the class
15 ;;Quote: dynamic selection of a procedure according to class of object
16 ;;Quote: in Simula, fishdeath.cause.countermeasure.cost yields a value according to class methods
16 ;;Quote: fishdeath.cause can be a procedure cause operating on argument fishdeath
18 ;;Quote: portability is a result of few concepts and complete definition
Topic: initialization of data (42 items)
Topic: memory management by garbage collection (113 items)
Topic: hypertext links (45 items)
Topic: pointers to data (55 items)
ThesaHelp: references p-r (245 items)
Topic: notation for program clusters (4 items)
Topic: Thesa data structures (59 items)
Topic: type inheritance as reuse (27 items)
Topic: object-oriented fields (28 items)
Topic: type reflection and introspection (28 items)
Topic: non-exclusive data type (16 items)
Topic: object-oriented classes (66 items)
Topic: generic operations and polymorphism (65 items)
Topic: object-oriented objects (36 items)
Topic: access to objects by a path (13 items)
Topic: object-defined names (15 items)
Topic: names defined by context (36 items)
Topic: variable as function that accesses an object's value (21 items)
Topic: software portability (43 items)