How do I make a column that sums only numeric columns?

Question

I have a dataframe with a lot of columns.

LABEL    COL1  COL2  COL3
Meat     10    20    30
Veggies  20    30    40

How do I make column named

Answer 1

I ended up using this code:

df$SUMCOL <- rowSums(df[sapply(df, is.numeric)], na.rm = TRUE)