Dyalog APL: Difference between revisions

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|-
|-
| <source lang=apl inline>⌷</source> || [[Materialise]]      || [[Squad Indexing]]
| <source lang=apl inline>⌷</source> || [[Materialise]]      || [[Squad Indexing]]
|}
=== Operators ===
{|class=wikitable
! Syntax                                !! Monadic call        !! Dyadic call
|-
| <source lang=apl inline>f/</source>  || [[Reduction]]      || [[Windowed Reduction]]
|-
| <source lang=apl inline>f⌿</source>  || [[Reduction First]] || [[Windowed Reduction First]]
|-
| <source lang=apl inline>f\</source>  || [[Scan]]            ||
|-
| <source lang=apl inline>f⍀</source>  || [[Scan First]]      ||
|-
| <source lang=apl inline>f¨</source>  ||colspan=2| [[Each]]
|-
| <source lang=apl inline>f⍨</source>  ||colspan=2| [[Commute]]
|-
| <source lang=apl inline>A⍨</source>  ||colspan=2| [[Constant]]
|-
| <source lang=apl inline>f⍣v</source>  ||colspan=2| [[Power]]
|-
| <source lang=apl inline>f.g</source>  ||                    || [[Inner Product]]
|-
| <source lang=apl inline>∘.f</source>  ||                    || [[Outer Product]]
|-
| <source lang=apl inline>A∘g</source>  ||rowspan=2| [[Bind]]  ||
|-
| <source lang=apl inline>f∘B</source>  ||
|-
| <source lang=apl inline>f∘g</source>  ||colspan=2| [[Beside]]
|-
| <source lang=apl inline>f⍤B</source>  ||colspan=2| [[Rank]]
|-
| <source lang=apl inline>f⍤g</source>  ||colspan=2| [[Atop]]
|-
| <source lang=apl inline>f⍥g</source>  ||colspan=2| [[Over]]
|-
| <source lang=apl inline>f@v</source>  ||colspan=2| [[At]]
|-
| <source lang=apl inline>f⍠B</source>  ||colspan=2| [[Variant]]
|-
| <source lang=apl inline>f⌸</source>  ||colspan=2| [[Key]]
|-
| <source lang=apl inline>f⌺B</source>  || [[Stencil]]        ||
|-
| <source lang=apl inline>A⌶</source>  ||colspan=2| [[I-Beam]]
|-
| <source lang=apl inline>f&</source>  ||colspan=2| [[Spawn]]
|-
| <source lang=apl inline>f[B]</source> ||colspan=2| [[Function axis|Axis]]
|}
|}


Revision as of 09:20, 1 November 2019

Dyalog APL was first released by British company Dyadic Systems Ltd. (later Dyalog Ltd.) in 1983 for the Zylog Z80 processor. The name Dyalog is a portmanteau of Dyadic and Zylog. As of 2018, Dyalog APL is available for AIX, Linux (including on the Raspberry Pi), macOS and Microsoft Windows platforms. While mainly based is based on APL2, it adds support for both object-oriented, functional, and tacit programming. Dyalog APL also serves as the inspiration for many hobby implementations of APL.

In 1995, two of the development team — John Scholes and Peter Donnelly — were awarded the Iverson Award for their work on the interpreter. Gitte Christensen and Morten Kromberg were joint recipients of the Iverson Award in 2016.

Dyalog APL is unique among commercial APLs in getting additional primitives and constructs. The most important novel extension to the original APL language include:

  • 1983: Naming derived functions (sum←+⌿)
  • 1990: Namespaces (MyUtils.Fun args)
  • 1995: Keywords (If/Then/Else, Repeat/Until, exception handling, and so on)
  • 1996: Functional programming: dfns provide lexical scope and lambda-style expressions
  • 2006: Object orientated programming, allowing integration with OO frameworks and Microsoft .NET
  • 2014: Tacit syntax similar to that of J (+⌿÷≢)
  • 2014: Futures and isolates for Parallel computing

Primitives

Functions

Glyph Monadic Dyadic
+ Conjugate Plus
- Negate Minus
× Signum Times
÷ Reciprocal Divide
| Magnitude Residue
⌊ Floor Minimum
⌈ Ceiling Maximum
* Exponential Power
⍟ Natural Logarithm Logarithm
! Factorial Binomial
○ Pi Times Circular
~ Not Without
? Roll Query
∧ And
∨ Or
⍲ Nand
⍱ Nor
< Less
≤ Less Or Equal
= Equal
≥ Greater Or Equal
> Greater
≠ Unique Mask Not Equal
⍴ Shape Reshape
, Ravel Catenate
⍪ Table Catenate First
⌽ Reverse Rotate
⊖ Reverse First Rotate First
⍉ Transpose
↑ Mix/Disclose Take
↓ Split Drop
⊂ Enclose Partitioned Enclose
⊆ Nest Partition
∊ Enlist/Type Membership
⊃ Disclose/Mix Pick
/ Replicate
⌿ Replicate First
\ Expand
⍀ Expand First
∩ Intersection
∪ Unique Union
⊣ Same Left
⊢ Same Right
⍳ Index Generator Index Of
⍸ Where Interval Index
⍒ Grade Down
⍋ Grade Up
⍷ Find
≡ Depth Match
≢ Tally Not Match
⍎ Execute
⍕ Format
⊥ Base
⊤ Represent
⌹ Matrix Inverse Matrix Divide
⌷ Materialise Squad Indexing

Operators

Syntax Monadic call Dyadic call
f/ Reduction Windowed Reduction
f⌿ Reduction First Windowed Reduction First
f\ Scan
f⍀ Scan First
f¨ Each
f⍨ Commute
A⍨ Constant
f⍣v Power
f.g Inner Product
∘.f Outer Product
A∘g Bind
f∘B
f∘g Beside
f⍤B Rank
f⍤g Atop
f⍥g Over
f@v At
f⍠B Variant
f⌸ Key
f⌺B Stencil
A⌶ I-Beam
f& Spawn
f[B] Axis

External links

Template:APL programming language

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