how to combine 60 matrices in R quickly

Question

I have 60 matrices in R named as mat1, mat2....mat60 and I would like to combine them into a big matrix using rbind. I know that I could write something like

Answer 1

This should be faster:

 library(data.table)
 rbindlist(matList)

EDIT The above solution will work for list of data.frame or list, If you have a list of matrix you should convert them before:

 rbindlist(lapply(ll,as.data.frame))