Singleton
Revision as of 09:07, 29 October 2019 by Miraheze>Adám Brudzewsky (Text replacement - "<code>" to "<source lang=apl inline>")
A singleton is an array with bound 1. Equivalently, its shape consists entirely of 1s. It may have any rank.
Every scalar is a singleton, because <source lang=apl inline>1=×/⍬.
Singletons may be subject to singleton extension.