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→Operator or function?
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=== Operator or function? === | === Operator or function? === | ||
{{Main|Function-operator overloading}} | |||
The syntax <source lang=apl inline>a / b</source> is ambiguous: it may be an invocation of a [[dyadic function]] <source lang=apl inline>/</source> with left [[argument]] <source lang=apl inline>a</source> and right argument <source lang=apl inline>b</source>, or of a [[monadic operator]] with [[operand]] <source lang=apl inline>a</source> and right argument <source lang=apl inline>b</source>. In early APLs there was no way to resolve this ambiguity, but with the extension of [[operator]]s to allow arbitrary function operands instead of a specified set of [[primitive function]]s, the distinction becomes apparent: a function Replicate can be used as an [[operand]] while an operator Replicate cannot. | The syntax <source lang=apl inline>a / b</source> is ambiguous: it may be an invocation of a [[dyadic function]] <source lang=apl inline>/</source> with left [[argument]] <source lang=apl inline>a</source> and right argument <source lang=apl inline>b</source>, or of a [[monadic operator]] with [[operand]] <source lang=apl inline>a</source> and right argument <source lang=apl inline>b</source>. In early APLs there was no way to resolve this ambiguity, but with the extension of [[operator]]s to allow arbitrary function operands instead of a specified set of [[primitive function]]s, the distinction becomes apparent: a function Replicate can be used as an [[operand]] while an operator Replicate cannot. | ||