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Timeline of APL primitives: Difference between revisions
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| 1965 || [[IVSYS/7090]] || [[Add]], [[Negate]], [[Subtract]], [[Multiply]], [[Divide]], [[Floor]], [[Ceiling]], [[Minimum]], [[Maximum]], [[Absolute value]], [[Modulus]], [[Exponential]], [[Power]], [[Not]], [[And]], [[Or]], [[comparison]]s, [[Iota]], [[Index of]], [[Shape]], [[Reshape]], [[Ravel]], [[Catenate]], [[Rotate]] (as <syntaxhighlight lang=apl inline>↑↓</syntaxhighlight>), [[Member of]], [[Encode]], [[Decode]], [[Reduce]], [[Compress]], [[Expand]], [[Inner product]], [[Outer product]], [[Assignment]], [[Bracket indexing]], [[Branch]]/[[Label]] | | 1965 || [[IVSYS/7090]] || [[Add]], [[Negate]], [[Subtract]], [[Multiply]], [[Divide]], [[Floor]], [[Ceiling]], [[Minimum]], [[Maximum]], [[Absolute value]], [[Modulus]], [[Exponential]], [[Power]], [[Not]], [[And]], [[Or]], [[comparison]]s, [[Iota]], [[Index of]], [[Shape]], [[Reshape]], [[Ravel]], [[Catenate]], [[Rotate]] (as <syntaxhighlight lang=apl inline>↑↓</syntaxhighlight>), [[Member of]], [[Encode]], [[Decode]], [[Reduce]], [[Compress]], [[Expand]], [[Inner product]], [[Outer product]], [[Assignment]], [[Bracket indexing]], [[Branch]]/[[Label]] | ||
|- | |- | ||
| 1966 || [[APL\360]] || [[Reciprocal]], [[Natural Logarithm]], [[Factorial]], [[Combinations]], [[Roll]], [[Transpose]], [[Rotate]] (<syntaxhighlight lang=apl inline>⌽</syntaxhighlight>), [[Function axis]] | | 1966 || [[APL\360]] || [[Reciprocal]], [[Natural Logarithm]], [[Factorial]], [[Combinations]], [[Roll]], [[Transpose]], [[Reverse]]/[[Rotate]] (<syntaxhighlight lang=apl inline>⌽</syntaxhighlight>), [[Function axis]] | ||
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| 1968 || [[APL\360]] || [[Signum]], [[Deal]], [[Pi times]], [[Circular]], [[Nand]], [[Nor]], [[Take]] (<syntaxhighlight lang=apl inline>↑</syntaxhighlight>), [[Drop]] (<syntaxhighlight lang=apl inline>↓</syntaxhighlight>), [[Grade]], [[Rotate First]] (<syntaxhighlight lang=apl inline>⊖</syntaxhighlight>), [[I-Beam]] | | 1968 || [[APL\360]] || [[Signum]], [[Logarithm]], [[Deal]], [[Pi times]], [[Circular]], [[Nand]], [[Nor]], [[Take]] (<syntaxhighlight lang=apl inline>↑</syntaxhighlight>), [[Drop]] (<syntaxhighlight lang=apl inline>↓</syntaxhighlight>), [[Grade]], [[Reverse First]]/[[Rotate First]] (<syntaxhighlight lang=apl inline>⊖</syntaxhighlight>), [[I-Beam]] | ||
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| 1970 || [[APL\360]] || overtake with [[Take]] | | 1970 || [[APL\360]] || overtake with [[Take]] | ||
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| 1983 || [[SHARP APL]] || [[Rank operator]] (<syntaxhighlight lang=apl inline>⍤</syntaxhighlight>) ([[Arthur Whitney|Whitney]] 1982) <br/> [[Left]] (<syntaxhighlight lang=apl inline>⊣</syntaxhighlight>), [[Right]] (<syntaxhighlight lang=apl inline>⊢</syntaxhighlight>), [[Conditional enclose]]/[[Link]] (<syntaxhighlight lang=apl inline>⊃</syntaxhighlight>) | | 1983 || [[SHARP APL]] || [[Rank operator]] (<syntaxhighlight lang=apl inline>⍤</syntaxhighlight>) ([[Arthur Whitney|Whitney]] 1982) <br/> [[Left]] (<syntaxhighlight lang=apl inline>⊣</syntaxhighlight>), [[Right]] (<syntaxhighlight lang=apl inline>⊢</syntaxhighlight>), [[Conditional enclose]]/[[Link]] (<syntaxhighlight lang=apl inline>⊃</syntaxhighlight>) | ||
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| 1984 || [[APL2]] || [[Partition]] (<syntaxhighlight lang=apl inline>⊂</syntaxhighlight>), [[First]] (<syntaxhighlight lang=apl inline>↑</syntaxhighlight>) and [[Mix]] (<syntaxhighlight lang=apl inline>⊃</syntaxhighlight>) opposite to NARS, [[Index (function)|Index]] (<syntaxhighlight lang=apl inline>⌷</syntaxhighlight>), [[Find]] (<syntaxhighlight lang=apl inline>⍷</syntaxhighlight>), [[Depth]] (<syntaxhighlight lang=apl inline>≡</syntaxhighlight>) | | 1984 || [[APL2]] || [[Partition]] (<syntaxhighlight lang=apl inline>⊂</syntaxhighlight>), [[First]] (<syntaxhighlight lang=apl inline>↑</syntaxhighlight>) and [[Mix]] (<syntaxhighlight lang=apl inline>⊃</syntaxhighlight>) opposite to NARS, [[Index (function)|Index]] (<syntaxhighlight lang=apl inline>⌷</syntaxhighlight>), [[Find]] (<syntaxhighlight lang=apl inline>⍷</syntaxhighlight>), [[Depth]] (<syntaxhighlight lang=apl inline>≡</syntaxhighlight>), [[Enlist]] (<syntaxhighlight lang=apl inline>∊</syntaxhighlight>) | ||
|- | |- | ||
| 1987 || [[SHARP APL]] || short left argument for [[Take]], [[Drop]] | | 1987 || [[SHARP APL]] || short left argument for [[Take]], [[Drop]] | ||