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Hi all, Would you generally consider NULL to be a vector? Base R functions are a little inconsistent: ## In favour ``` r identical(as.vector(NULL), NULL) #> [1] TRUE identical(as(NULL, "vector"), NULL) #> [1] TRUE # supports key vector vector generics length(NULL) #> [1] 0 NULL[c(3, 4, 5)] #> NULL NULL[[1]] #> NULL ``` ## Against ``` r is.vector(NULL) #> [1]