Print messages on console during parallel computing

An exemple that print messages during parallel computing

library(pbmcapply) # Can work with mclapply also
cores <- 2
lazyChattySqrt <- function(num, name) {
     # Sleep 2 seconds
     Sys.sleep(2)
     system(sprintf("echo '\nHello\n'"))
     return(sprintf("Hello %s, the sqrt of %f is %f.", toString(name), num, sqrt(num)))
 }
chattyResult <- pbmclapply(1:3, lazyChattySqrt, "Bob", mc.cores = cores)

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