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Quote: define a sequence of operations with numeric operation indices, repeated cycles, and sequences

topics > all references > references m-o > QuoteRef: menaLF10_1842 , p. 276 [Lovelace:]



Group:
programming notation
Topic:
preventing accidental errors

Quotation

The following would be the successive sets of operations ... (x, x, .divide., +), (x, x, x, .divide., +, +), n(x, +, x, .divide., +). Or we might represent them as follows, according to the numerical [index] of the operations:-- (1,2...4), (5,6...10), n(11, 12...15). The brackets ... point out the relation in which the operations may be grouped, while the comma marks succession. ... In accordance with this meaning attached to the comma, care must be taken when any one group of operations recurs more than once, as is represented above by n(11...15), not to insert a comma after the number or letter prefixed to that group. n,(11...15) would stand for an operation n, followed by the group of operations (11...15); instead of denoting the number of groups which are to follow each other. Whenever a general term exists, there will be a recurring group of operations, as in the above example. Both for brevity and for distinctness, a recurring group is called a cycle.   Google-1   Google-2

Published before 1922

Additional Titles

Quote: be careful of adding a comma between the cycle count and group of operations; otherwise get a sequence

Related Topics up

Group: programming notation   (14 topics, 221 quotes)
Topic: preventing accidental errors (36 items)

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