"Prime" is intended as a rather minimal modification of Dyalog APL, but going back and correcting original design mistakes. This mostly regards being primary-axis oriented, but also applies to making the original operators consistent and making ⎕IO←0 forced. The goal is to make APL more appealing to the modern audience. That is, to bring APL into its prime.
Requires Dyalog APL version 17.1 or higher.
Replacing ns with your target namespace (e.g. #), do
]import ns path/prime
Now you have three options:
- Use the extensions directly with the glyph names.
- Use
ns.prime.FIXas a drop in for⎕FIX. - Use
ns.prime.Repl ''to start a (limited) self-contained session where the glyphs work. Enter→to exit. - Use
ns.prime.Repl refto start a (limited) session in the namespaceref. Enter→to exit.
| Name | Glyph | Extension |
|---|---|---|
| BackSlashBar | ⍀ |
only expand first |
| CircleBackSlash | ⍉ |
monadic rotates axes |
| CircleBar | ⊖ |
disabled |
| CircleStile | ⌽ |
first axis |
| Comma | , |
first axis |
| CommaBar | ⍪ |
increase rank/join |
| DelStile | ⍒ |
but dyadic sort-by |
| DeltaStile | ⍋ |
but dyadic sort-by |
| DownArrow | ↓ |
enclose major cells |
| DownShoe | ∪ |
on major cells |
| DownTack | ⊤ |
transposed and extend scalar |
| Epsilon | ∊ |
on major cells |
| Iota | ⍳ |
noticing 1-element vector |
| IotaUnderbar | ⍸ |
⎕IO←0 for monadic but ⎕IO←1 for dyadic |
| LeftShoe | ⊂ |
just ⎕IO |
| LeftShoeUnderbar | ⊆ |
on major cells |
| Plus | + |
purely numeric |
| QuadDivide | ⌹ |
high rank |
| Query | ? |
high rank |
| RightShoe | ⊃ |
just ⎕IO |
| SlashBar | ⌿ |
only replicate first |
| Squad | ⌷ |
but sane |
| Tilde | ~ |
on major cells |
| UpShoe | ∩ |
on major cells |
| UpTack | ⊥ |
transposed |
| _BackSlash | \ |
scan first and outer product |
| _Diaeresis | ¨ |
handling empty arrays with failing prototype |
| _JotDiaeresis_ | ⍤ |
but handling empties |
| _Slash | / |
only reduce first |