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Hello! I saw that rust HashMap can't be used in smart contracts as std in not allowed. Is there an alternative? I have a use case where for internal computation (not storage) I need to sum some values by keys and at the end retrieve all of the keys and their resulting sum. Is there a way to do this without HashMap?
Hello, I had the same use case. There is no alternative to HashMap. You should rethink your algorithm to not require a hashmap. For me, I added a logic to send some values in ascending order only to the SC so then I could check when a value (key) changed and add them to a ManagedVec in a struct containing the key and value.