Atomic vector

Atomic vector (⎕AV) contains 256 characters. This was the entire character set in some of the older interpreters that did not support Unicode.

In Dyalog APL:

      6 41⍴10↓⎕AV
⌶ɫ%'⍺⍵_abcdefghijklmnopqrstuvwxyz��¯.⍬012
3456789�⊢¥$£¢∆ABCDEFGHIJKLMNOPQRSTUVWXYZ�
�ý·?⍙ÁÂÃÇÈÊËÌÍÎÏÐÒÓÔÕÙÚÛÝþãìðòõ{€}⊣⌷¨ÀÄÅÆ
⍨ÉÑÖØÜßàáâäåæçèéêëíîïñ[/⌿\⍀<≤=≥>≠∨∧-+÷×?∊
⍴~↑↓⍳○*⌈⌊∇∘(⊂⊃∩∪⊥⊤|;,⍱⍲⍒⍋⍉⌽⊖⍟⌹!⍕⍎⍫⍪≡≢óôöø
"#�&´┘┐┌└┼─├┤┴┬│@ùúû^ü`∣¶:⍷¿¡⋄←→⍝)]� §⎕⍞⍣

In GNU APL:

      5 45⍴31↓⎕AV
 !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJK
LMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwx
yz{|}~¥€⇄∧∼≬⋆⋸⌸⌺⌼μ⍁¡⍣⍅⎕⍞⌹⍆⍤⍇⍈⍊⊤λ⍍⍏£⊥⍶⌶⍐⍑χ≢⍖⍗
⍘⍚⍛⌈⍜⍢∪⍨⍕⍎⍬⍪∣│┤⍟∆∇→╣║╗╝←⌊┐└┴┬├─┼↑↓╔╚╩╦╠═╬≡⍸⍷∵
⌷⍂⌻⊢⊣◊┘┌█▄▌▐▀⍺⍹⊂⊃⍝⍲⍴⍱⌽⊖○∨⍳⍉∈∩⌿⍀≥≤≠×÷⍙∘⍵⍫⍋⍒¯¨ 

⎕AV is obsolete in Dyalog APL since Unicode Edition was introduced. The Unicode Atomic Vector (⎕AVU) defines characters in ⎕AV as a list of Unicode code points.

Links

• Dyalog version 18.0 – Atomic Vector
• Mastering Dyalog APL: page 525