Is single logical
is_single_logical.RdTests if an object is a single logical
Examples
is_single_logical(TRUE) # TRUE
#> [1] TRUE
is_single_logical(FALSE) # TRUE
#> [1] TRUE
is_single_logical(c(TRUE, FALSE)) # FALSE
#> [1] FALSE
is_single_logical(-1.0) # FALSE
#> [1] FALSE
is_single_logical(0) # FALSE
#> [1] FALSE
is_single_logical(NA) # FALSE
#> [1] FALSE