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Topic: accessing a sequence
topics >
computer science >
data >
access by current position
Topic:
access by pattern matching
Topic:
file input/output
Topic:
sub-sequences
Summary
Sequences can be accessed relative to a current position, relative to the sequence's beginning, or relative to the sequence's termination. Both elements and sub-sequences can be identified. Structure-marked sequences with level numbers can be accessed through the structure. (cbb 5/80)
Subtopic: lists
Quote: scan a queue without destruction by appending eoq and wait until it appears [»millHD2_1986]
Subtopic: sequence index
Quote: used parameter passing mechanism for concatenation and splitting of lists; list by square brackets around actual or formal parameters [»mckeRM5_1984]
Quote: Icon numbers the positions between characters, from either end of the string [»grisRE4_1980] QuoteRef: hehnEC7_1975 ;;10 "abc" is 1:(a) 2:(b) 3:© where (character literal) QuoteRef: hallJC5_1974 ;;44 list has index directive e.g., A(3) points to the 3rd aggregate of A QuoteRef: kayAC6_1968 ;;25 "abcdef" [2 to 5] means "bcde" and a[2 to 5] means a[2], a[3],... a[5] QuoteRef: mullAP_1964 ;;450 reference by level e.g. a .circle1. .uparrow. 7 represents 8th (zero relative) symbol (char is zeroth level) from named unit a QuoteRef: mullAP_1964 ;;451 .circleN. .uparrow. i is from current position with update of current position while .circleN. .?. i is starting at previous name reference and update. QuoteRef: wileDS11_1973 ;;32 operator to get last one <1.2.3>val = 3
Topic: access by current position (7 items)
Topic: access by pattern matching (18 items)
Topic: file input/output (21 items)
Topic: sub-sequences
(13 items)