Atomic vector

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⎕AV

Atomic vector (⎕AV) is the name of a 256-character vector which contains the entire character set of older APL implementations that did not support Unicode, but instead used a single byte to store each character. Its value varies wildly between dialects, and can even differ between editions of the same dialect.

ISO/IEC 13751:2001 standard defined atomic vector as: "An implementation-defined character vector containing every member of the required character set exactly once".[1]

Value

In the following, display of the the character sets are obtained using 16 16mask\(mask32⎕UCS ⎕AV)/⎕AV to replace control characters with spaces.

APL2

APL2 uses two primary values of ⎕AV, an ASCII-based value on personal computers, and an EBCDIC-based value on mainframes. The ASCII-based value is:

                 
                
 !"#$%&'()*+,-./
0123456789:;<=>?
@ABCDEFGHIJKLMNO
PQRSTUVWXYZ[\]^_
`abcdefghijklmno
pqrstuvwxyz{|}~?
ÇüéâäàåçêëèïîìÄÅ
⎕⍞⌹ôöòûù⊤ÖÜø£⊥₧⌶
áíóúñѪº¿⌈¬½∪¡⍕⍎
░▒▓│┤⍟∆∇→╣║╗╝←⌊┐
└┴┬├─┼↑↓╚╔╩╦╠═╬≡
⍸⍷∵⌷⍂⌻⊢⊣⋄┘┌█▄¦Ì▀
⍺ß⊂⊃⍝⍲⍴⍱⌽⊖○∨⍳⍉∊∩
⌿⍀≥≤≠×÷⍙∘⍵⍫⍋⍒¯¨ 

APLX

In order to maximise the probability of being able to represent the text when converting from Unicode to internal representation, APLX accepts as input a number of alternative Unicode values for certain characters. However, these are automatically mapped to normalised character, and any unmappable characters are replaced with a question mark.

      ⍐ ⍗ ⍇⍈ ⍱⍲
⍒⍋⌽⍉⊖⍟⌶⍫⍎⍕⍀⌿⍝⍞!⌹
 ¨)<≤=>]∨^≠÷,+./
0123456789([;×:\
¯⍺⊥∩⌊∊_∇{⍳∘'⎕|⊤○
*?⍴⌈~↓∪⍵⊃↑⊂←⊢→≥-
⋄ABCDEFGHIJKLMNO
PQRSTUVWXYZ∆⊣⍪$}

┌┐└┘─│┼├┤┴┬  Í
"#%&@£`≡≢⍷⍸  ⍤⍥⌷
ÄÅÇÉÑÖÜáàâäãåçéè
êëíìîïñóòô⍥õúùûü
ÀÃÕ  Ææ⍬Øø¿¡ßÿ
 abcdefghijklmno
pqrstuvwxyz⍙È€

Dyalog APL

⎕AV is obsolete in Dyalog APL since the Unicode Edition was introduced and is only retained for backwards compatibility.[2] It no longer contains all the glyphs used for primitive functions and operators[3], but can be adjusted by setting the Atomic Vector - Unicode (⎕AVU) variable to a list of Unicode code points. The default value is:

          ⌶ɫ%'⍺⍵
_abcdefghijklmno
pqrstuvwxyz  ¯.⍬
0123456789 ⊢¥$£¢
∆ABCDEFGHIJKLMNO
PQRSTUVWXYZ  ý·?
⍙ÁÂÃÇÈÊËÌÍÎÏÐÒÓÔ
ÕÙÚÛÝþãìðòõ{€}⊣⌷
¨ÀÄÅÆ⍨ÉÑÖØÜßàáâä
åæçèéêëíîïñ[/⌿\⍀
<≤=≥>≠∨∧-+÷×?∊⍴~
↑↓⍳○*⌈⌊∇∘(⊂⊃∩∪⊥⊤
|;,⍱⍲⍒⍋⍉⌽⊖⍟⌹!⍕⍎⍫
⍪≡≢óôöø"# &´┘┐┌└
┼─├┤┴┬│@ùúû^ü`∣¶
:⍷¿¡⋄←→⍝)]  §⎕⍞⍣

GNU APL

GNU APL is fully Unicode-aware, and only includes the atomic vector for completeness:

                
                
 !"#$%&'()*+,-./
0123456789:;<=>?
@ABCDEFGHIJKLMNO
PQRSTUVWXYZ[\]^_
`abcdefghijklmno
pqrstuvwxyz{|}~?
¥€⇄∧∼≬⋆⋸⌸⌺⌼μ⍁¡⍣⍅
⎕⍞⌹⍆⍤⍇⍈⍊⊤λ⍍⍏£⊥⍶⌶
⍐⍑χ≢⍖⍗⍘⍚⍛⌈⍜⍢∪⍨⍕⍎
⍬⍪∣│┤⍟∆∇→╣║╗╝←⌊┐
└┴┬├─┼↑↓╔╚╩╦╠═╬≡
⍸⍷∵⌷⍂⌻⊢⊣◊┘┌█▄▌▐▀
⍺⍹⊂⊃⍝⍲⍴⍱⌽⊖○∨⍳⍉∈∩
⌿⍀≥≤≠×÷⍙∘⍵⍫⍋⍒¯¨ 

External links

Documentation

References

  1. BS ISO/IEC 13751:2001: Information technology. Programming languages, their environments and system software interfaces. Programming language Extended APL. (2001).
  2. Bernard Legrand. Mastering Dyalog APL (page 525). Dyalog Ltd. November 2009.
  3. Adám Brudzewsky SBCS (Single Byte Character Set) Usage
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