2,951
edits
Nub Sieve: Difference between revisions
Jump to navigation
Jump to search
→History: Defined in A Programming Language!
(→Documentation: BQN) |
(→History: Defined in A Programming Language!) |
||
| Line 89: | Line 89: | ||
:''See also [[Unique#History]].'' | :''See also [[Unique#History]].'' | ||
Nubsieve (<source lang=apl inline>≠</source>) first appeared in [[A Dictionary of APL]] in 1987, and was eventually added to [[SHARP APL]]. It appears [https://code.jsoftware.com/wiki/Vocabulary/tildeco in J] as <source lang=j inline>~:</source> or Nub Sieve. It is also included in [[Dyalog APL 18.0]], released June 2020. | In [[A Programming Language]], <math>\sigma/\mathbf{v}</math> is a special notation indicating the nub sieve of <math>\mathbf{v}</math>, so that unique elements are found with a [[Compress]]ion <math>(\sigma/\mathbf{v})/\mathbf{v}</math>. | ||
The function Nubsieve (<source lang=apl inline>≠</source>) first appeared in [[A Dictionary of APL]] in 1987, and was eventually added to [[SHARP APL]]. It appears [https://code.jsoftware.com/wiki/Vocabulary/tildeco in J] as <source lang=j inline>~:</source> or Nub Sieve. It is also included in [[Dyalog APL 18.0]], released June 2020. | |||
== External links == | == External links == | ||