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Operator valence: Difference between revisions
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Operators category
Miraheze>Marshall (Created page with ":''This page is about the number of operands of an operator. For the number of arguments of a function, see function valence. In APL syntax, an oper...") |
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One special case is that of the [[Inner Product]] and [[Outer Product]] operators. The Inner Product is a dyadic operator <source lang=apl inline>f.g</source>, and the Outer Product is written <source lang=apl inline>∘.g</source>. Various APLs interpret the latter syntax in different ways. In [[Iverson notation]] and [[APL\360]] an outer product was described as a kind of inner product with an omitted left operand (making the Inner Product ambivalent), but later APLs such as [[Dyalog APL]] typically refer to Outer Product as a separate, monadic operator with a special syntax. [[SHARP APL]] defines <source lang=apl inline>∘</source> to be an array ([[Nil]]), so that Inner Product is a purely dyadic operator and the Outer Product is a special case with an array left operand. | One special case is that of the [[Inner Product]] and [[Outer Product]] operators. The Inner Product is a dyadic operator <source lang=apl inline>f.g</source>, and the Outer Product is written <source lang=apl inline>∘.g</source>. Various APLs interpret the latter syntax in different ways. In [[Iverson notation]] and [[APL\360]] an outer product was described as a kind of inner product with an omitted left operand (making the Inner Product ambivalent), but later APLs such as [[Dyalog APL]] typically refer to Outer Product as a separate, monadic operator with a special syntax. [[SHARP APL]] defines <source lang=apl inline>∘</source> to be an array ([[Nil]]), so that Inner Product is a purely dyadic operator and the Outer Product is a special case with an array left operand. | ||
{{APL | {{APL syntax}}[[Category:Operators]] | ||