AddOrUpdate Method For Generics Dictionary

[suleman-khalid]

If we have a generics dictionary and we want to
1- update if the key exists
2- add if the key doesn't exist

We currently have to use
if ContainsKey
{ update }
else
{ add }

Can we add a method "AddOrUpdate" to do the above logic in one call?

[GalaxiaGuy]

dictionary[key] = value;

https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.idictionary-2.item?view=net-6.0#remarks

You can also use the Item[] property to add new elements by setting the value of a key that does not exist in the dictionary; for example, myCollection["myNonexistentKey"] = myValue in C#. However, if the specified key already exists in the dictionary, setting the Item[] property overwrites the old value.

[svick]

This is a question for dotnet/runtime, where it was discussed a few times (#26848, #1221) and ended up being closed, pointing to CollectionsMarshal.GetValueRefOrAddDefault() if you're looking for this method to improve performance.