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Timeline of APL primitives: Difference between revisions
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Punctuation and naming consistency
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| 2010 || [[NARS2000]] || [[Tally]] (<syntaxhighlight lang=apl inline>></syntaxhighlight>, changed to <syntaxhighlight lang=apl inline>≢</syntaxhighlight> following Dyalog, 2011) ([[A+]] 1988, [[J]] 1990) | | 2010 || [[NARS2000]] || [[Tally]] (<syntaxhighlight lang=apl inline>></syntaxhighlight>, changed to <syntaxhighlight lang=apl inline>≢</syntaxhighlight> following Dyalog, 2011) ([[A+]] 1988, [[J]] 1990) | ||
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| 2010 || [[NARS2000]] || [[Indices]] (<syntaxhighlight lang=apl inline>⍸</syntaxhighlight>) ([[K]] 1996 | | 2010 || [[NARS2000]] || [[Indices]] (<syntaxhighlight lang=apl inline>⍸</syntaxhighlight>) ([[K]] 1996, [[J]] 2003) | ||
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| 2011 || [[NARS2000]] || [[Over]] (<syntaxhighlight lang=apl inline>⍥</syntaxhighlight>) (SHARP | | 2011 || [[NARS2000]] || [[Over]] (<syntaxhighlight lang=apl inline>⍥</syntaxhighlight>) (SHARP (close) 1981) | ||
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| 2011 || [[NARS2000]] || [[Square Root]]/[[Root]] (<syntaxhighlight lang=apl inline>√</syntaxhighlight>) (proposed [[Eugene McDonnell|McDonnell]] 1986 | | 2011 || [[NARS2000]] || [[Square Root]]/[[Root]] (<syntaxhighlight lang=apl inline>√</syntaxhighlight>) (proposed [[Eugene McDonnell|McDonnell]] 1986; [[J]] 1990) | ||
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| 2011 || [[Dyalog APL]] || [[Key]] (<syntaxhighlight lang=apl inline>⌸</syntaxhighlight>) ([[J]] 1990)<!-- <br/> [[Variant]] (<syntaxhighlight lang=apl inline>⍠</syntaxhighlight>) ([[Operators and Functions]] 1978)--> | | 2011 || [[Dyalog APL]] || [[Key]] (<syntaxhighlight lang=apl inline>⌸</syntaxhighlight>) ([[J]] 1990)<!-- <br/> [[Variant]] (<syntaxhighlight lang=apl inline>⍠</syntaxhighlight>) ([[Operators and Functions]] 1978)--> | ||
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| 2014 || [[Dyalog APL]] || 2-[[train]] as [[Atop]] (proposed [[Roger Hui|Hui]] 2006; [[I]] 2012), [[major cell search]] ([[A+]] 1988) | | 2014 || [[Dyalog APL]] || 2-[[train]] as [[Atop]] (proposed [[Roger Hui|Hui]] 2006; [[I]] 2012), [[major cell search]] ([[A+]] 1988) | ||
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| 2017 || [[Dyalog APL]] || [[At]] (<syntaxhighlight lang=apl inline>@</syntaxhighlight>) ([[John Scholes|Scholes]]) <br/> [[Stencil]] (<syntaxhighlight lang=apl inline>⌺</syntaxhighlight>) (from [[Cut]]: [[Rationalized APL]] 1983, [[J]] 1994) <br/> [[Interval Index]] (<syntaxhighlight lang=apl inline>⍸</syntaxhighlight>) ([[A+]] 1988, [[J]] 2006) <br/> [[Nest]] (<syntaxhighlight lang=apl inline>⊆</syntaxhighlight>) (SHARP | | 2017 || [[Dyalog APL]] || [[At]] (<syntaxhighlight lang=apl inline>@</syntaxhighlight>) ([[John Scholes|Scholes]]) <br/> [[Stencil]] (<syntaxhighlight lang=apl inline>⌺</syntaxhighlight>) (from [[Cut]]: [[Rationalized APL]] 1983, [[J]] 1994) <br/> [[Interval Index]] (<syntaxhighlight lang=apl inline>⍸</syntaxhighlight>) ([[A+]] 1988, [[J]] 2006) <br/> [[Nest]] (<syntaxhighlight lang=apl inline>⊆</syntaxhighlight>) (SHARP 1983) | ||
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<!-- | 2018 || [[dzaima/APL]] || [[Array notation]] (numerous other languages; proposed [[Phil Last|Last]] 2015) | <!-- | 2018 || [[dzaima/APL]] || [[Array notation]] (numerous other languages; proposed [[Phil Last|Last]] 2015) | ||
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| 2019 || [[dzaima/APL]] || [[Reverse Compose]] (<syntaxhighlight lang=apl inline>⍛</syntaxhighlight>) ([[I]] 2012, [[Extended Dyalog APL]] 2019) <!-- <br/> [[Pair]] (<syntaxhighlight lang=apl inline>⍮</syntaxhighlight>) ([[Nial]] dyadic 1982, [[I]] 2012) --> | | 2019 || [[dzaima/APL]] || [[Reverse Compose]] (<syntaxhighlight lang=apl inline>⍛</syntaxhighlight>) ([[I]] 2012, [[Extended Dyalog APL]] 2019) <!-- <br/> [[Pair]] (<syntaxhighlight lang=apl inline>⍮</syntaxhighlight>) ([[Nial]] dyadic 1982, [[I]] 2012) --> | ||
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| 2020 || [[Dyalog APL]] || [[Atop]] (<syntaxhighlight lang=apl inline>⍤</syntaxhighlight>) (SHARP | | 2020 || [[Dyalog APL]] || [[Atop]] (<syntaxhighlight lang=apl inline>⍤</syntaxhighlight>) (SHARP (close) 1981), [[Constant]] (<syntaxhighlight lang=apl inline>⍨</syntaxhighlight>) ([[I]] 2012) | ||
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