C#•4mo ago

✅ Return readonly property

Hello, i have a an question about returning class property as readonly(immutable) outside ? for example how to implement this C++ code in C#

const map<Command, Container>& getCommands() const { return commands }

//
auto m = c.getCommands();
m.insert(....) // error

const map<Command, Container>& getCommands() const { return commands }

//
auto m = c.getCommands();
m.insert(....) // error

here is some part of my C# code

 public Dictionary<Command,Container> GetCommands() 
 {
     return _commands;
 }

 privateDictionary<Command, Container> _commands;

 public Dictionary<Command,Container> GetCommands() 
 {
     return _commands;
 }

 privateDictionary<Command, Container> _commands;

i wanna block Add operations outside class var m = c.getCommands(); m.Add(... I searched google and stackoverflow but I couldn't find exactly I wanted, then when I asked chatgpt got anwswer that I should use IReadOnlyDictionary<T>. Is this the best practice?

2 Replies

Pobiega•4mo ago

Correct. Mutability in C# comes down to the type system

Trou•4mo ago

ok, thanks

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✅ Return readonly property