title: dput of a list is giving error
body: <p>I have tired to make an example here <a href="https://stackoverflow.com/questions/41039915/how-can-i-manipulate-a-very-large-list">how can I manipulate a very large list</a></p>
  
  <p>I cannot figure out why my dput is giving always error. This is the dput </p>
  
  <pre><code>my.list&lt;- list(structure(list(check = c(FALSE, FALSE, FALSE, FALSE, FALSE, 
  FALSE), myfile = c("", "1xLabel:13C(6)15N(4) [R11]", "1xOxidation [M7]", 
  "", "1xLabel:13C(6)15N(4) [R11]", ""), Myname = c("Q9Y383", "Q9Y383", 
  "Q9Y383", "Q15366-2", "Q15366-2", "Q15366-2")), .Names = c("check", 
  "myfile", "Myname"), row.names = c(NA, -6L), class = c("data.table", 
  "data.frame"), .internal.selfref = &lt;pointer: 0x103006b78&gt;), structure(list(
      check = c(FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE
      ), myfile = c(NA, NA, NA, NA, NA, NA, NA), Myname = c("F8W727", 
      "O76021", "P46783", "P35527", "Q96C45", "Q9Y383", "Q9Y383"
      )), .Names = c("check", "myfile", "Myname"), row.names = c(NA, 
  -7L), class = c("data.table", "data.frame"), .internal.selfref = &lt;pointer: 0x103006b78&gt;), 
      structure(list(check = c(FALSE, FALSE, FALSE, FALSE, FALSE, 
      FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), myfile = c("", 
      "", "", "", "1xLabel:13C(6)15N(4) [R7]", "", "", "", "3xLabel:13C(6)15N(4) [R1; R7; R10]", 
      "", ""), Myname = c("P61247", "P39019", "Q9NWH9", "P62917", 
      "P62917", "E9PCT1", "Q15149", "Q14152", "Q14152", "Q15020", 
      "Q02543")), .Names = c("check", "myfile", "Myname"), row.names = c(NA, 
      -11L), class = c("data.table", "data.frame"), .internal.selfref = &lt;pointer: 0x103006b78&gt;))
  </code></pre>
  
  <p>and this is the error </p>
  
  <blockquote>
    <p>Error: unexpected '&lt;' in: "s = c(NA, 
                                                                                                                                                                                     -11L), class = "</p>
  </blockquote>