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Kimmo Ojala
Python Web Development Techdegree Student 8,257 PointsHow to pass an argument to base constructor
Hi,
There must be something wrong with my code because I get an error message. I'm trying to initialize the numSides parameter of the child class Square by passing 4 to the parent class constructor. What am I doing wrong?
BR, Kimmo
namespace Treehouse.CodeChallenges
{
class Square : Polygon
{
public readonly int SideLength;
public Square(int numSides, int sideLength) : base(numSides)
{
SideLength = sideLength;
numSides = 4;
}
}
class Polygon
{
public readonly int NumSides;
public Polygon(int numSides)
{
NumSides = numSides;
}
}
}
1 Answer
Steven Parker
231,271 PointsRight technique, wrong value.
When they say "by passing 4 to the parent class constructor", they mean 4 — literally ("base(4)").
Also, Square should only take one argument. And you may need to define it after Polygon.
Kimmo Ojala
Python Web Development Techdegree Student 8,257 PointsKimmo Ojala
Python Web Development Techdegree Student 8,257 PointsThanks Steven. The solution was so literal I just couldn't think of it. Kind of funny, what I tried didn't look right to me, but I would have never guessed that they mean literally what they say. Thanks again!