https://github.com/vendethiel/trying.apl

APL is the greatest language ever
https://github.com/vendethiel/trying.apl

apl dyalog trying

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APL is the greatest language ever

• Host: GitHub
• URL: https://github.com/vendethiel/trying.apl
• Owner: vendethiel
• Created: 2015-09-27T19:00:15.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2024-12-18T13:15:09.000Z (about 1 year ago)
• Last Synced: 2025-01-27T08:45:04.801Z (12 months ago)
• Topics: apl, dyalog, trying
• Language: APL
• Homepage:
• Size: 55.7 KB
• Stars: 68
• Watchers: 12
• Forks: 5
• Open Issues: 8
• Metadata Files:
  • Readme: readme.md

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README

          
# Trying APL

This repository contains a handful of basic APL snippets, demonstrating each and every operator's purpose and behavior.

The `ex/` directory contains a few examples, mostly from Programming Puzzles & Code Golf Stack Exchange.

Table of contents


Evolution level: 1



  

    

      Filename

      Symbol name

      Symbol

      Monadic

      Dyadic

      Operator (higher-order)

    

  

  

    

      assign

      left arrow

      ←

      

      Assignment

      

    

    

      index

      iota

      ⍳

      Index Generator

      Index of

      

    

    

      reduce-replicate

      slash

      /

      

      Replicate

      Reduce

    

    

      shaped

      rho

      ⍴

      Shape-of

      Reshape

      

    

    

      mix-take

      up arrow

      ↑

      Mix

      Take

      

    

    

      enclose

      left shoe

      ⊂

      Enclose

      Partitioned enclose

      

    

    

      first-pick

      right shoe

      ⊃

      First

      Pick

      

    

    

      rand

      question mark

      ?

      Roll

      Deal

      

    

    

      commute

      tilde dieresis

      ⍨

      

      

      Commute

    

    

      element-s

      epsilon

      ∊

      Enlist (flat)

      Membership

      

    

    

      rev-rot

      circle stile

      ⌽

      Reverse (inner)

      Rotate (inner)

      

    

    

      rev-rot-first

      circle bar

      ⊖

      Reverse first (outer)

      Rotate first (outer)

      

    

    

      not-without

      tilde

      ~

      Not

      Without

      

    

    

      cat

      comma

      ,

      Ravel

      Concatenate

      

    

    

      logic

      Logical {N,}{and,or}

      ∧, ∨, ⍲, ⍱

      

      and, or, nand, nor

      

    

    

      compare

      {Not,} Equal | {Greater,Lower} than{,or equal}

      <, >, ≤, ≥, =, ≠

      

      lower, greater, lower-or-eq, greater-or-eq, eq, not-eq

      

    

    

      grade

      grade {up,down}

      ⍋ (up), ⍒ (down)

      Grade {Up,Down}

      Dyadic Grade {Up,Down}

      

    

    

      each

      dieresis

      ¨

      

      

      Each

    

    

      function

      braces

      { and }

      ⍵ (monadic argument) / ⍵⍵ (function monadic argument)

      ⍺ (dyadic argument) / ⍺⍺ (function dyadic argument)

      Function

    

    

      depth-match

      equal underbash

      ≡

      Depth

      Match

      

    

    

      tally-notmatch

      equal underbash slash

      ≢

      Tally

      Not-match

      

    

    

      statement

      diamond

      ⋄

      

      Statement separator

      

    

    

      short-circuit

      colon

      :

      

      returns ⍵ from ∇ if ⍺=1

      

    

    

      compose

      jot

      ∘

      

      

      Monadic compose (e.g.: ⍴∘⍴) / Currying

    

    

      pointfree (implicit composition)

      

      

      

      

      

    

      inner-product

      dot

      .

      

      

      Inner product (e.g.: +.×)

    

    

      outer-product

      jot + dot

      ∘.

      

      

      Outer product (e.g.: ∘.+)

    

    

      rank

      jot diaerisis

      ⍤

      (⍵ is the new rank of the operator)

      changes the rank of ⍺⍺

    

    

      variant

      quad colon

      ⍠

      Sets option value

      

      

    

    

      key

      quad equal

      ⌸

      Returns an scalar vector (key, positions for the key)