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Miraheze>Marshall (Created page with "In the APL array model, an element of an array is one of the values it contains. In flat array theory an element is a character, number, or box, and cannot...") |
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In the APL [[array model]], an element of an array is one of the values it contains. In [[flat array theory]] an element is a [[character]], [[number]], or [[box]], and cannot be manipulated directly within the language. In [[nested array theory]] each element of an array is another array, and an element of an array can be retrieved using the [[Pick]] function. [[Stranding]] forms a [[vector]] directly from its elements. | In the APL [[array model]], an element of an array is one of the values it contains. In [[flat array theory]] an element is a [[character]], [[number]], or [[box]], and cannot be manipulated directly within the language. In [[nested array theory]] each element of an array is another array, and an element of an array can be retrieved using the [[Pick]] function. [[Stranding]] forms a [[vector]] directly from its elements. | ||
The APL Wiki's usage of the term "element" differs from the usage in flat array languages, where it may be used as a synonym for [[ | The APL Wiki's usage of the term "element" differs from the usage in flat array languages, where it may be used as a synonym for an atom or 0-[[cell]] or to refer to the contents of [[box]] elements in a boxed array. Defining "element" to mean something that is not an array is intended to make it easier to reconcile flat with nested array theory using common terminology. | ||
[[Scalar functions]] are applied element-wise to their argument arrays (using [[conformability]] to pair elements). In nested APLs this means they traverse deeply nested arrays to produce a result; in flat APLs they go down only one level. | [[Scalar functions]] are applied element-wise to their argument arrays (using [[conformability]] to pair elements). In nested APLs this means they traverse deeply nested arrays to produce a result; in flat APLs they go down only one level. | ||