When it comes to the number of arguments to pass to a function, Uncle Bob is pretty clear. Quoting from Clean Code:
The ideal number of arguments for a function is zero (niladic). Next comes one (monadic), followed closely by two (dyadic). Three arguments (triadic) should be avoided when possible. More than three (polyadic) requires very special justification – and then shouldn’t be used anyway.
Still, some objects might have more than 3 attributes or properties and you usually need some way to initialize them via the constructor. Some attribute might not be mandatory, therefore on some occasions you can get by with a few overloads adding more parameters as needed.
Consider the following (contrieved) example from the world of soccer. I have picked a few attributes that encapsulate the concept of a Team.
namespace Soccer
{
public enum Color
{
White,
Red,
Green,
Blue
}
public class Team
{
string Name { get; set; }
string NickName { get; set; }
Color ShirtColor { get; set; }
string HomeTown { get; set; }
string Ground { get; set; }
public Team(
string name,
string nickName,
Color shirtColor,
string homeTown,
string ground)
{
Name = name;
NickName = nickName;
ShirtColor = shirtColor;
HomeTown = homeTown;
Ground = ground;
}
}
}
Let’s try initializing one team:
Team team1 = new Team(
"Manchester United",
"The Red Devils",
Color.Red,
"Manchester",
"Old Trafford");
Read more: Stefano Ricciardi
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