C#•17mo ago

❔ Polymorphism

Can someone help me understand this part of the code? I dont understand why its being written like this...

public class BankBranch
   {
      //
      // This field keep a list of bank accounts.
      // Any type of accounts will be accepted
      // 
      private List<Account> _accounts;

      public BankBranch(string name)
      {
         Name = name;
         _accounts = new List<Account>();
      }

      // Auto-properties
      public string Name { get; set; }

public class BankBranch
   {
      //
      // This field keep a list of bank accounts.
      // Any type of accounts will be accepted
      // 
      private List<Account> _accounts;

      public BankBranch(string name)
      {
         Name = name;
         _accounts = new List<Account>();
      }

      // Auto-properties
      public string Name { get; set; }

10 Replies

moshimoshi•17mo ago

E.g., why do we have to use property function if field is set to public?

Pobiega•17mo ago

You only have one field here, and its private. you have one property, and its public

moshimoshi•17mo ago

isnt these the fields

private List<Account> _accounts;
public BankBranch(string name)
      {
         Name = name;
         _accounts = new List<Account>();
      }

private List<Account> _accounts;
public BankBranch(string name)
      {
         Name = name;
         _accounts = new List<Account>();
      }

and this the property?

 public string Name { get; set; }

 public string Name { get; set; }

Pobiega•17mo ago

private List<Account> _accounts; is a field

public BankBranch(string name)
      {
         Name = name;
         _accounts = new List<Account>();
      }

public BankBranch(string name)
      {
         Name = name;
         _accounts = new List<Account>();
      }

moshimoshi•17mo ago

oh my bad! i just realized

Pobiega•17mo ago

is a constructor

moshimoshi•17mo ago

can I ask, why dont the account field go into the constructor's args?

Pobiega•17mo ago

It could! Depends on how you want it to work. In this case, it always creates a new, empty list when a branch is constructed.

Anton•17mo ago

you could do that, but this class is assumed to own the state, so giving it a mutable list could lead to unexpected things

Accord•17mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Polymorphism