System Function A: Difference between revisions

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<h1><aplxx>⎕A</aplxx> - Return Latin Alphabet</h1>
<tr>
{{BoxStart
  <td>
|<apll>Z←⎕A</apll>
    <table border="0" cellpadding="5" cellspacing="0" summary="">
|returns the 26-character uppercase Latin alphabet.}}
    <tr>
{{BoxEnd|<apll>Z</apll> is the character vector <apll>'ABCDEFGHIJKLMNOPQRSTUVWXYZ'</apll>.}}
      <td valign="top"><apll>Z←⎕A</apll></td>
The name is case sensitive, so <apll>⎕A</apll> is different from <apll>⎕a</apll> which returns <apll>'abcdefghijklmnopqrstuvwxyz'</apll>.  There are also ten other variations on this system function each of which returns either the lower- or upper-case accented alphabet as in <apll>⎕á ⎕Á ⎕à ⎕À ⎕â ⎕Â ⎕ä ⎕Ä ⎕ã ⎕Ã</apll>.  For example:
      <td></td>
      <td></td>
      <td>returns the 26-character uppercase English alphabet.</td>
    </tr>
    </table>
  </td>
</tr>


<tr>
<apll><pre>
  <td><apll>Z</apll> is the character vector <apll>'ABCDEFGHIJKLMNOPQRSTUVWXYZ'</apll>.</td>
      ⍪⎕a ⎕á ⎕à ⎕â ⎕ä ⎕ã
</tr>
abcdefghijklmnopqrstuvwxyz 
ábćdéfǵhíjḱĺḿńóṕqŕśtúvẃxýź
àbcdèfghìjklmǹòpqrstùvẁxỳz
âbĉdêfĝĥîĵklmnôpqrstuvwxyz
äbcdëfgḧïjklmnöpqrsẗüvẅẍÿz
ãbcdẽfghĩjklmñõpqrstũṽwxỹz
      ⍪⎕A ⎕Á ⎕À ⎕Â ⎕Ä ⎕Ã
ABCDEFGHIJKLMNOPQRSTUVWXYZ  
ÁBĆDÉFǴHÍJḰĹḾŃÓṔQŔŚTÚVẂXÝŹ
ÀBCDÈFGHÌJKLMǸÒPQRSTÙVẀXỲZ
ÂBĈDÊFĜĤÎĴKLMNÔPQRŜTÛVŴXŶẐ
ÄBCDËFGḦÏJKLMNÖPQRSTÜVẄẌŸZ
ÃBCDẼFGHĨJKLMÑÕPQRSTŨṼWXỸZ 
</pre></apll>


</table>
The result of <apll>⎕A</apll> may be used as any other string, including referencing individual letters.  For example:<br/>
<br />
<apll><pre>
      ⎕A[8 5 12 12 15]
HELLO
</pre></apll>
 
See also <apll>⎕CS</apll>, a [[System_Function_CS|Collating Sequence]] based upon the values of these system functions.
 
{{SFN|A}}
 
{{Article footer}}

Latest revision as of 11:28, 16 April 2018

⎕A - Return Latin Alphabet

Z←⎕A returns the 26-character uppercase Latin alphabet.
Z is the character vector 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.

The name is case sensitive, so ⎕A is different from ⎕a which returns 'abcdefghijklmnopqrstuvwxyz'. There are also ten other variations on this system function each of which returns either the lower- or upper-case accented alphabet as in ⎕á ⎕Á ⎕à ⎕À ⎕â ⎕Â ⎕ä ⎕Ä ⎕ã ⎕Ã. For example: 

      ⍪⎕a ⎕á ⎕à ⎕â ⎕ä ⎕ã 
 abcdefghijklmnopqrstuvwxyz  
 ábćdéfǵhíjḱĺḿńóṕqŕśtúvẃxýź 
 àbcdèfghìjklmǹòpqrstùvẁxỳz 
 âbĉdêfĝĥîĵklmnôpqrstuvwxyz 
 äbcdëfgḧïjklmnöpqrsẗüvẅẍÿz 
 ãbcdẽfghĩjklmñõpqrstũṽwxỹz 
      ⍪⎕A ⎕Á ⎕À ⎕Â ⎕Ä ⎕Ã 
 ABCDEFGHIJKLMNOPQRSTUVWXYZ 
 ÁBĆDÉFǴHÍJḰĹḾŃÓṔQŔŚTÚVẂXÝŹ 
 ÀBCDÈFGHÌJKLMǸÒPQRSTÙVẀXỲZ 
 ÂBĈDÊFĜĤÎĴKLMNÔPQRŜTÛVŴXŶẐ 
 ÄBCDËFGḦÏJKLMNÖPQRSTÜVẄẌŸZ 
 ÃBCDẼFGHĨJKLMÑÕPQRSTŨṼWXỸZ

The result of ⎕A may be used as any other string, including referencing individual letters. For example:

      ⎕A[8 5 12 12 15] 
HELLO

See also ⎕CS, a Collating Sequence based upon the values of these system functions.


Note: ⎕A is a niladic form system function, you cannot assign a value to it.

System Variables (A value may be assigned to these except for ⎕DM)
⎕ALX ⎕CT ⎕DM ⎕DT ⎕ELX ⎕FC ⎕FEATURE ⎕FPC ⎕IC ⎕IO
⎕LR ⎕LX ⎕PP ⎕PR ⎕PW ⎕RL ⎕SA ⎕WSID
Niladic System Functions (a value cannot be assigned to these)
⎕A ⎕AV ⎕EM ⎕ET ⎕LC ⎕NNAMES ⎕NNUMS ⎕SI ⎕SYSID ⎕SYSVER
⎕T ⎕TC ⎕TCBEL ⎕TCBS ⎕TCESC ⎕TCFF ⎕TCHT ⎕TCLF ⎕TCNL ⎕TCNUL
⎕TS ⎕WA
Monadic or dyadic system functions (a value cannot be assigned to these)
⎕AT ⎕CR ⎕DC ⎕DFT ⎕DL ⎕DR ⎕EA ⎕EC ⎕ERROR ⎕ES
⎕EX ⎕FMT ⎕FX ⎕MF ⎕NAPPEND ⎕NC ⎕NCREATE ⎕NERASE ⎕NINFO ⎕NL
⎕NLOCK ⎕NREAD ⎕NRENAME ⎕NREPLACE ⎕NRESIZE ⎕NSIZE ⎕NTIE ⎕NUNTIE ⎕STOP ⎕TF
⎕TRACE ⎕UCS ⎕VR
Note that quad functions and variables (except for the ⎕A family of functions) are case insensitive


See Also
System Commands System Variables and Functions Operators


Keyboard
Alt+Shift ⍪ ≡ ≢ ⍒ ⍋ ⌽ ⍉ ⊖ ⍟ ⍱ ⍲ ⍠ ⌹
Alt ⋄ ¨ ¯ < ≤ ∅ ≥ > ≠ ∨ ∧ × ÷
Shift ~ ! @ # $ % ^ & * ( ) _ +
Key ` 1 2 3 4 5 6 7 8 9 0 - =
Alt+Shift ⍷ √ ⍨ ⍸ ⍥ ⍣ ⍞ ⍬ ⊣
Alt ? ⍵ ∊ ⍴ § ↑ ↓ ⍳ ○ π ← → ⊢
Shift Q W E R T Y U I O P { } |
Key q w e r t y u i o p [ ] \
Alt+Shift ∫ ∂ ⌻ ⍢ ⍙ ⍤ ⍫ ⌷
Alt ⍺ ⌈ ⌊ ∞ ∇ ∆ ∘ ‼ ⎕ ⍎ ⍕
Shift A S D F G H J K L : "
Key a s d f g h j k l ; '
Alt+Shift ⊆ ⊇ χ ⍡ ⍭ ⊙
Alt ⊂ ⊃ ∩ ∪ ⊥ ⊤ ⍦ ⍝ ⍀ ⌿
Shift Z X C V B N M < > ?
Key z x c v b n m , . /
NARS 2000 Lang
Tool
Bar 		← → + - × ÷ * ⍟ ⌹ ○ ! ? √ | ⌈ ⌊ ⊥ ⊤ ⊣ ⊢
≡ ≢ < ≤ = ≥ > ≠ ∨ ∧ ⍱ ⍲ ↑ ↓ ⊂ ⊃ ⌷ ⍋ ⍒
⍳ ∊ ⍸ ⍷ ∪ ∩ ⊆ ⊇ ~ § π .. , ⍪ ⍴ ⌽ ⊖ ⍉
/ \ ⌿ ⍀ ⊙ ¨ ⍨ ⍤ ⍣ ⍡ ⍥ ⍦ . ∘ ⍠ ‼ ⌻ ∂ ∫ ⍞ ⎕ ⍎ ⍕
⋄ ⍝ ∇ ∆ ⍙ _ ⍺ ⍵ ¯ ⍬ ∞ ∅
Second Row i j k i j k l g p r v x



See Also
System Commands System Variables and Functions Operators


Keyboard
Alt+Shift ⍪ ≡ ≢ ⍒ ⍋ ⌽ ⍉ ⊖ ⍟ ⍱ ⍲ ⍠ ⌹
Alt ⋄ ¨ ¯ < ≤ ∅ ≥ > ≠ ∨ ∧ × ÷
Shift ~ ! @ # $ % ^ & * ( ) _ +
Key ` 1 2 3 4 5 6 7 8 9 0 - =
Alt+Shift ⍷ √ ⍨ ⍸ ⍥ ⍣ ⍞ ⍬ ⊣
Alt ? ⍵ ∊ ⍴ § ↑ ↓ ⍳ ○ π ← → ⊢
Shift Q W E R T Y U I O P { } |
Key q w e r t y u i o p [ ] \
Alt+Shift ∫ ∂ ⌻ ⍢ ⍙ ⍤ ⍫ ⌷
Alt ⍺ ⌈ ⌊ ∞ ∇ ∆ ∘ ‼ ⎕ ⍎ ⍕
Shift A S D F G H J K L : "
Key a s d f g h j k l ; '
Alt+Shift ⊆ ⊇ χ ⍡ ⍭ ⊙
Alt ⊂ ⊃ ∩ ∪ ⊥ ⊤ ⍦ ⍝ ⍀ ⌿
Shift Z X C V B N M < > ?
Key z x c v b n m , . /
NARS 2000 Lang
Tool
Bar 		← → + - × ÷ * ⍟ ⌹ ○ ! ? √ | ⌈ ⌊ ⊥ ⊤ ⊣ ⊢
≡ ≢ < ≤ = ≥ > ≠ ∨ ∧ ⍱ ⍲ ↑ ↓ ⊂ ⊃ ⌷ ⍋ ⍒
⍳ ∊ ⍸ ⍷ ∪ ∩ ⊆ ⊇ ~ § π .. , ⍪ ⍴ ⌽ ⊖ ⍉
/ \ ⌿ ⍀ ⊙ ¨ ⍨ ⍤ ⍣ ⍡ ⍥ ⍦ . ∘ ⍠ ‼ ⌻ ∂ ∫ ⍞ ⎕ ⍎ ⍕
⋄ ⍝ ∇ ∆ ⍙ _ ⍺ ⍵ ¯ ⍬ ∞ ∅
Second Row i j k i j k l g p r v x

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