Split a data frame by the last column programmatically

Question

I want to split a data frame, with an arbitrary number of columns, by the last column, without providing a column name or number. Something like [imaginary code land]:

d <- split(MY_DATA, ncol(MYDATA)) 

A sample data set might be something like:

pepsi  1
dr_pep 2
coke   1

Where our data set has no headers, by the last column would represent a desired grouping like the following:

dr_pep 2 --> group 2

pepsi  1  --> group 1
coke   1

Answer 1

df <- read.table(text = 'pepsi  1
dr_pep 2
coke   1', header=F)

split(df, df[,ncol(df)])