This category covers Dyalog implementation topics: how the interpreter actually works under the hood, including floating-point comparison and tolerance, performance optimisation and its occasional pitfalls, primitive function internals like stencil, and behind-the-scenes accounts of building infrastructure like the APL Challenge. Expect technical depth aimed at readers curious about how Dyalog APL is built, not just how to use it.
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Copyright © 2004 – 2026 Dyalog Ltd.
Technical advice and assistance on all aspects of Dyalog usage is available by e-mail (support@dyalog.com) and/or telephone (+44 1256 830030 – limited to U.K. office hours). Limited advice on design and coding is available, but is not intended to replace the use of the printed and on-line documentation. Except when reporting an issue with the software, users are encouraged to seek advice from the user community via the Dyalog Forum (reading the content of the forums does not require membership).