MakeYourBooleanChecksBoolean.as

// meh...

var iAmAStringInstance :String = "";
var iAmANullString :String = null;

if(iAmAStringInstance)
{
    trace("iAmAStringInstance is neither null nor empty");
}
else
{
    trace("iAmAStringInstance is either null or empty");
}


if(iAmANullString)
{
    trace("iAmANullString is neither null nor empty");
}
else
{
    trace("iAmANullString is either null or empty");
}

// Trace outputs:
//
//   iAmAStringInstance is either null or empty
//   iAmANullString is either null or empty
//
// Right. Not particularly good, but not particularly bad either.