[swift-evolution] constant var

[Inder Kumar Rathore .]

Nice idea but I think the code will look ugly

On Tue, Dec 12, 2017 at 1:28 PM, Rafael Guerreiro <guerreiro.dev at gmail.com>
wrote:

> You actually need a class to wrap the dictionary.
> That’s because dictionaries are struct, with copy-on-write.
>
> With a class, you’ll be able to have it mutable, in a let declaration.
> On Mon, Dec 11, 2017 at 11:34 PM Inder Kumar Rathore . via swift-evolution
> <swift-evolution at swift.org> wrote:
>
>> Hi All,
>> Today I was writing code and faced a situation where I need to make a
>> instance variable a const i.e. it shouldn't accept new values from anywhere
>> but the problem is that I want it's content to be mutable.
>>
>> e.g.
>>
>> class MyClass {
>>   var myDict = [String : String]()
>> }
>>
>>
>> I want above variable to be constant and if I make it like below
>>
>> class MyClass {
>>   let myDict = [String : String]()
>> }
>>
>> Then I cann't add key/value in the myDict like
>>
>>    self.myDict["name"] = "Rathore"
>>
>>
>> I know swift and couldn't find anything related to this.
>>
>> Can anybody help me?
>>
>>
>> If there is no such method of doing it then I would suggest to either use
>> a syntax like
>>
>> class MyClass {
>>   const var myDict = [String : String]()
>> }
>>
>> I'm not using *final *here since that make a var not overridable.
>>
>>
>>
>> --
>> Best regards,
>> Inder Kumar Rathore
>> _______________________________________________
>> swift-evolution mailing list
>> swift-evolution at swift.org
>> https://lists.swift.org/mailman/listinfo/swift-evolution
>>
>


-- 
Best regards,
Inder Kumar Rathore
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