/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public override Value eval(Env env)
{
return(BooleanValue.create(_value.evalEmpty(env)));
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public override Value eval(Env env)
{
return(BooleanValue.create(_value.evalEmpty(env)));
}