function with dot(.) and comma(,) put together

Asked Apr 22 '17 at 20:44

Active Apr 22 '17 at 20:49

Viewed 59 times

map_wc <- function(.,lines)                                              
{                                                                        

  lines_lst = unlist(strsplit(lines,"\r\n",fixed=TRUE))                  
  l_cnt<-1;
  keys_l<-c()
  data_l<-c()
  for (line in lines_lst)
  { 
    words = unlist(strsplit(line,";",fixed=TRUE))

    if (length(words) != 5){
      next
    }
  }

Anyone using Rhadoop might be familiar with the code above. Can someone please explain to me the reason why ".," i.e dot(.) and (,) in the first line function are placed side-by-side. Please when answering note that am new to R.

edited Apr 22 '17 at 20:49

Roland

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asked Apr 22 '17 at 20:44

linkonabe

Comma separates function arguments and dot is a valid symbol in R. – Roland Apr 22 '17 at 20:50
1

I assume the dot argument is used later in the function. – Roland Apr 22 '17 at 20:51

function with dot(.) and comma(,) put together

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