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kotlinlang

is a collection with just one element really a singleton? <https://github.com/kotest/kotest/blob/0ba14983d485b1b1caef0e5a2cd7402ba47e34d2/kotest-assertions/kotest-assertions-core/src/commonMain/kotlin/io/kotest/matchers/collections/singleton.kt|https://github.com/kotest/kotest/blob/0ba14983d485b1b1caef0e5a2cd7402ba47e34d2/kot[…]c/commonMain/kotlin/io/kotest/matchers/collections/singleton.kt>

a coworker of mine just used that matcher and it was very confusing to read. <https://en.wikipedia.org/wiki/Singleton_pattern>

I think it stands more for the SingletonList

<https://www.geeksforgeeks.org/collections-singletonlist-method-in-java-with-examples/>

The St lib uses the term single. We should maybe reword to that.