merge in r code example

Example 1: r how to merge data frames

merge(x = df1, y = df2, by = c("Name_tag1", "Name_tag2"), all = TRUE)

Example 2: r merge lists

l1 <- list(a=1, b=2)
l2 <- list(b=3, c=4)

modifyList(l1, l2)
# > list(a=1, b=3, c=4)

modifyList(l2, l1)
# > list(a=1, b=2, c=4)

# Note: later arguments override elements of the previous arguemnts.