Klong: Difference between revisions

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m (Text replacement - "{{APL dialects}}" to "{{APL dialects}}Category:K dialects")
m (Text replacement - "Group" to "Group")
 
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| file ext                = .kg
| file ext                = .kg
| developer                = Nils M Holm
| developer                = Nils M Holm
| latest release version  = 2019-09-26
| latest release version  = 2022-12-12
| implementation language  = [[wikipedia:C_(programming_language)|C]] ([[wikipedia:C99|C99]])
| implementation language  = [[wikipedia:C_(programming_language)|C]] ([[wikipedia:C99|C99]])
| platforms                = Unix, [[wikipedia:Plan 9 from Bell Labs|Plan 9]]
| platforms                = Unix, [[wikipedia:Plan 9 from Bell Labs|Plan 9]]
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| influenced by            = [[K]], [[wikipedia:Lisp (programming language)|Lisp]]
| influenced by            = [[K]], [[wikipedia:Lisp (programming language)|Lisp]]
}}
}}
'''Klong''' is a language based on [[K]] (probably K3) which removes K's syntactic ambiguity and much of its overloading by using more digraphs ([[primitive]]s composed of two characters) to separate extra meanings. The removal of syntactic ambiguity means Klong has a [[wikipedia:context-free grammar|context-free grammar]].
'''Klong''' is a language based on [[K]] (probably K3) which removes K's syntactic ambiguity and much of its overloading by using more digraphs ([[primitive function]]s and [[primitive operator|operators]] composed of two characters) to separate extra meanings. The removal of syntactic ambiguity means Klong has a [[wikipedia:context-free grammar|context-free grammar]].
 
== KlongPy ==
 
[https://github.com/briangu/klongpy KlongPy] is an independent, compatible implementation of Klong in [[wikipedia:NumPy|NumPy]]. It can be closely integrated with Python due to its use of NumPy arrays, and can be run on the GPU using [[wikipedia:CuPy|CuPy]] in place of standard NumPy.


== Primitives ==
== Primitives ==
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| <code>></code>  || [[Grade-Down]]          || [[More]]
| <code>></code>  || [[Grade-Down]]          || [[More]]
|-
|-
| <code>=</code>  || [[Group]]              || [[Equal]]
| <code>=</code>  || [[Group (K)|Group]]              || [[Equal]]
|-
|-
| <code>~</code>  || [[Not]]                || [[Match]]
| <code>~</code>  || [[Not]]                || [[Match]]
|-
|-
| <code>@</code>  || [[Atom]]                || [[Index function|Index]]/Apply
| <code>@</code>  || Atom                   || [[Index function|Index]]/Apply
|-
|-
| <code>:@</code> ||                        || Index-in-Depth
| <code>:@</code> ||                        || Index-in-Depth
|-
|-
| <code>?</code>  || [[Range]]               || [[Find]]
| <code>?</code>  || Range ([[Unique]])      || [[Find]]
|-
|-
| <code>,</code>  || List (like [[Enclose]]) || Join (like [[Catenate]])
| <code>,</code>  || List (like [[Enclose]]) || Join (like [[Catenate]])
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* [http://t3x.org/klong/klong-vs-k.txt.html Differences from K]
* [http://t3x.org/klong/klong-vs-k.txt.html Differences from K]


{{APL dialects}}[[Category:K dialects]]
{{APL dialects}}[[Category:K dialects]][[Category:IR compilers]]

Latest revision as of 20:15, 31 January 2024

Klong is a language based on K (probably K3) which removes K's syntactic ambiguity and much of its overloading by using more digraphs (primitive functions and operators composed of two characters) to separate extra meanings. The removal of syntactic ambiguity means Klong has a context-free grammar.

KlongPy

KlongPy is an independent, compatible implementation of Klong in NumPy. It can be closely integrated with Python due to its use of NumPy arrays, and can be run on the GPU using CuPy in place of standard NumPy.

Primitives

Klong documentation refers to primitive functions ("verbs" in K) as "operators".

Operator Monadic Dyadic
+ Transpose Plus
- Negate Minus
* First Times
% Reciprocal Divide
:% Integer-Divide
| Reverse Max/Or
:+ Rotate
& Expand/Where Min/And
^ Shape Power
:^ Reshape
! Enumerate Remainder
< Grade-Up Less
> Grade-Down More
= Group Equal
~ Not Match
@ Atom Index/Apply
:@ Index-in-Depth
? Range (Unique) Find
, List (like Enclose) Join (like Catenate)
_ Floor Drop
:_ Undefined Cut
:# Char Split (Partition by lengths)
# Size Take
$ Format Format2
:= Amend
:- Amend-in-Depth
:: Define
:$ Form
Adverb Definition
f'a Each
a f'b Each2
a f:\b Each-Left
a f:/b Each-Right
f:'b Each-Pair
f/a Over
a f/b Over-Neutral
f:~a Converge
a f:~b While
a f:*b Iterate
f\a Scan-Over
a f\b Scan-Over-Neutral
f\~a Scan-Converging
a f\~a Scan-While
a f\*a Scan-Iterating

External links


APL dialects [edit]
Maintained APL+WinAPL2APL64APL\ivApletteAprilCo-dfnsDyalog APLDyalog APL Visiondzaima/APLGNU APLKapNARS2000Pometo
Historical A Programming LanguageA+ (A) ∙ APL#APL2CAPL\360APL/700APL\1130APL\3000APL.68000APL*PLUSAPL.jlAPL.SVAPLXExtended Dyalog APLIverson notationIVSYS/7090NARSngn/aplopenAPLOperators and FunctionsPATRowanSAXSHARP APLRationalized APLVisualAPL (APLNext) ∙ VS APLYork APL
Derivatives AHPLBQNCoSyELIGleeIIvyJJellyK (Goal, Klong, Q) ∙ KamilaLispLang5LilNialRADUiua
Overviews Comparison of APL dialectsTimeline of array languagesTimeline of influential array languagesFamily tree of array languages