Bang bang into the room
You previously used {{ }} from the rlang package in a function definition to pass an unquoted column name to group_by(). This can also be done within summarize(). In this exercise, you'll work with !! and enquo(), but similar code could also be written to use {{ }}. You'll come back to that in the next lesson.
แบบฝึกหัดนี้เป็นส่วนหนึ่งของหลักสูตร
Programming with dplyr
แบบฝึกหัดเชิงโต้ตอบแบบลงมือทำ
ลองทำแบบฝึกหัดนี้โดยเติมโค้ดตัวอย่างนี้ให้สมบูรณ์
# Complete the function code, not using {{ }}
grouped_median_for_column <- ___(___, col_to_median) {
world_bank_data %>%
group_by(___) %>%
summarize(median(___,
na.rm = TRUE))
}