Grouping Max Date

[flachboard]

Hello,

Is it possible to return the max date per group when grouping?

I'm attempting this, and it returns "NaN" values.

group <- c("Group1", "Group1", "Group2", "Group2")
date <- c("2020-01-03", "2020-01-07", "2020-01-11", "2020-01-21")
temp_df <- data.frame(group, date) %>% group_by(group) %>% reactable( groupBy = "group", columns = list( date = colDef(aggregate = "max") ) )