x <- lapply(1:3, function(i) { list(a=i,b=i^2) })
list.stack(x)
x <- lapply(1:3, function(i) { list(a=i,b=i^2,c=letters[i])})
list.stack(x)
x <- lapply(1:3, function(i) { data.frame(a=i,b=i^2,c=letters[i]) })
list.stack(x)Run the code above in your browser using DataLab