add link to blog post (#60)

jmbarbone · May 20, 2024 · bbd30ba · bbd30ba
1 parent cc1c70e
commit bbd30ba
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/R/list.R b/R/list.R
@@ -22,6 +22,7 @@ list0 <- function(...) {
 lst <- list0
 
 is_not_empty <- function(x) {
+  # https://jmbarbone.github.io/posts/wat-na-list/
   x <- x != substitute()
   x | is.na(x)
 }