public static new LeastCommonMultipleExpression?Parse(string str)
{
List <IRacketObject>?arguments = RacketParsingHelper.ParseRacketIntegers(str);
if (arguments?.Count > 1)
{
return(new LeastCommonMultipleExpression(arguments));
}
return(null);
}
public static new IsEvenExpression?Parse(string str)
{
List <IRacketObject>?arguments = RacketParsingHelper.ParseRacketIntegers(str);
if (arguments?.Count == 1)
{
return(new IsEvenExpression(arguments));
}
return(null);
}
public static new RandomExpression?Parse(string str)
{
List <IRacketObject>?arguments = RacketParsingHelper.ParseRacketIntegers(str);
if (arguments?.Count == 1 && arguments[0] is RacketExpression)
{
return(new RandomExpression(arguments));
}
else if (arguments?.Count == 1 && ((RacketInteger)arguments[0]).IsNatural)
{
return(new RandomExpression(arguments));
}
return(null);
}
