title: converting a text file into a vector in R
body: <p>I have a text file in the following format: <code>elt1\telt2\t...</code> with 1,000,000 elements.
  Most of these elements are integers, but some of them are of the form number_number or chainOfCharacters. For example: <code>1\t2\t2_3\t4_44\t2\t'sap'\t34\t'stack'</code> should output: <code>1 2 2_3 4_44 2 'sap' 34 'stack'</code>.I tried to load this data in R using <code>data &lt;- read.table(file(fileName),row.names=0,sep='\t')</code> but it is taking for ever. Is it possible to speed this up?</p>