Intro R language is not fast comparing to C Java, even Python given that it is a high level programming language without a compiler. Recently I've found a useful article regarding to JIT tech in R which explain in detail application JIT in R. JIT will compile all R code to Byte Code , as Python compiler does. There are two packages that implement such JIT in R , package jit and package compiler , jit ,unluckily seems to be inactive. Thus I just try to brief the feature of  compiler package Read more [...]