How do you set a value in a ConcurrentDictionary regardless of whether it contains a key

Question

First of all, is it safe to just add an element to a parallel dictionary using an indexed destination (e.g. myConcurrentDictionary[someKey] = someValue;)?

I'm just confused because it hides IDictionary methods (e.g., Add).

Why is the func function required to add the value of the AddOrUpdate () parameter? Is there a way to set a value for a key regardless of whether the key exists?

I could not compile this on the MSDN page.

Answer 1

• Yes, using an indexer should be absolutely perfect if you want to add or replace a value.

• AddOrUpdate , "" "" , , . , .

• - " , ", IDictionary<,>.

- - :

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: dictionary[key] = newValue

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Answer 2

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Add , TryAdd. , . , , . , , .

AddOrUpdated :

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