$foo = "a string";
{
  local( $foo = "localised" );
  print $foo,$/;
}
print $foo,$/;

__output__

localised
localised

##</code><code>##

($foo = 'a string');
{
    ($foo = 'localised');
    print($foo, $/);
}
print($foo, $/);
- syntax OK