in reply to <STDIN> always in string mode?

Further tests have shown that you can "anonymise"(sp?) the scalar with an eval:
perl -e '$foo=<STDIN>;$foo=eval($foo);print(($foo*2)."\n")'


-- Ian Stuart
A man depriving some poor village, somewhere, of a first-class idiot.

Replies are listed 'Best First'.
Re^2: <STDIN> always in string mode?
by salva (Canon) on Mar 27, 2006 at 12:08 UTC
    be aware that evaling something read from an external file or STDIN is highly insecure. In an untrusted environment, you should check the input (and use taint checking): 
    $foo = <STDIN>;
if ($foo =~ /^(\d*)$/) {
  $foo = eval $1;
  print "foo: $foo\n"
}
else {
  die "bad input"
}

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