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Array notation: Difference between revisions
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The project manager Acre Desktop added support for the non-namespace parts of the notation in early 2018, together with Phil Last's original namespace notation, using square brackets and assignment arrow. [[dzaima/APL]] added support for vector notation with parentheses in 2018, namespaces and function arrays in 2019, and high-rank arrays with square brackets in 2020. [[BQN]] supported lists with angle brackets (<code>⟨</code>…<code>⟩</code>) in its initial implementation in 2020; square brackets (<code>[</code>…<code>]</code>) were reserved for high-rank array notation, which was implemented in 2022. | The project manager Acre Desktop added support for the non-namespace parts of the notation in early 2018, together with Phil Last's original namespace notation, using square brackets and assignment arrow. [[dzaima/APL]] added support for vector notation with parentheses in 2018, namespaces and function arrays in 2019, and high-rank arrays with square brackets in 2020. [[BQN]] supported lists with angle brackets (<code>⟨</code>…<code>⟩</code>) in its initial implementation in 2020; square brackets (<code>[</code>…<code>]</code>) were reserved for high-rank array notation, which was implemented in 2022. | ||
On April 21, 2023, Dyalog Ltd published a blog post by Morten Kromberg announcing to the [[community]] the formal proposal for an APL array notation<ref name=formprop>Kromberg, Morten. [https://www.dyalog.com/blog/2023/04/formal-proposal-for-apl-array-notation-seeking-feedback/ Formal Proposal for APL Array Notation – Seeking Feedback]. Formal Proposal for APL Array Notation – Seeking Feedback. April 21, 2023.</ref> and by May 5, the specification for scoping in namespaces was changed due to feedback from Dyalog Ltd employee Peter Mikkelsen: Assignments inside value expressions would now affect the surrounding scope rather than having [[dfn]]-like auto-localisation, which can instead be achieved by wrapping the expression in an anonymous dfn. | |||
{{Template:Comparison of array notations}} | {{Template:Comparison of array notations}} | ||
== Documentation == | == Documentation == | ||
* [https://mlochbaum.github.io/BQN/doc/arrayrepr.html#array-literals BQN] (as <code>⟨⋄⟩</code>, <code>[⋄]</code>, and <code>{key⇐val⋄}</code>) | * [https://mlochbaum.github.io/BQN/doc/arrayrepr.html#array-literals BQN] (as <code>⟨⋄⟩</code>, <code>[⋄]</code>, and <code>{key⇐val⋄}</code>) | ||