df_paste preserves factors but drops unseen levels #39
Description
example:
head(iris) %>% df_paste()
data.frame(
Sepal.Length = c(5.1, 4.9, 4.7, 4.6, 5, 5.4),
Sepal.Width = c(3.5, 3, 3.2, 3.1, 3.6, 3.9),
Petal.Length = c(1.4, 1.4, 1.3, 1.5, 1.4, 1.7),
Petal.Width = c(0.2, 0.2, 0.2, 0.2, 0.2, 0.4),
Species = as.factor(c("setosa", "setosa", "setosa", "setosa", "setosa",
"setosa"))
)
Part of me is happy with this since unused factor levels are usually annoying. However this may be unexpected for some people.