Dyadic operator: Difference between revisions
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In [[APL syntax]], a '''dyadic operator''' (or '''conjunction''') is an [[operator]] which takes two [[operand]]s, one on each side. In [[APL\360]] the only dyadic operator was [[Inner Product]], but other operators such as [[Beside]] and [[Bind]] (<syntaxhighlight lang=apl inline>∘</ | In [[APL syntax]], a '''dyadic operator''' (or '''conjunction''') is an [[operator]] which takes two [[operand]]s, one on each side. In [[APL\360]] the only dyadic operator was [[Inner Product]], but other operators such as [[Beside]] and [[Bind]] (<syntaxhighlight lang=apl inline>∘</syntaxhighlight>), and [[Power (operator)|Power]] (<syntaxhighlight lang=apl inline>⍣</syntaxhighlight>) have become common, and languages such as [[J]], [[NARS2000]], and [[dzaima/APL]] have added many experimental dyadic operators. | ||
The term "dyadic operator" refers to the [[operator valence|valence]] of the operator itself, that is, the number of operands. When applied, it produces a [[derived function]], which can have a different [[function valence]]. For example, the [[Inner Product]] is usually a dyadic operator that produces a [[dyadic function]] (<syntaxhighlight lang=apl inline>+.× A</ | The term "dyadic operator" refers to the [[operator valence|valence]] of the operator itself, that is, the number of operands. When applied, it produces a [[derived function]], which can have a different [[function valence]]. For example, the [[Inner Product]] is usually a dyadic operator that produces a [[dyadic function]] (<syntaxhighlight lang=apl inline>+.× A</syntaxhighlight> is a [[SYNTAX ERROR]], unless it's defined to be the [[Determinant]] operator), while [[Power (operator)|Power]] generally produces an [[ambivalent]] function. The [[Compose]] function can produce an ambivalent function <syntaxhighlight lang=apl inline>f∘g</syntaxhighlight>, or a monadic function <syntaxhighlight lang=apl inline>A∘f</syntaxhighlight> if an array <syntaxhighlight lang=apl inline>A</syntaxhighlight> is [[Bind|bound]] to a function <syntaxhighlight lang=apl inline>f</syntaxhighlight>. | ||
{{APL syntax}}[[Category:Operators]] | {{APL syntax}}[[Category:Operators]] |