A future is a strongly typed variable that represents a value that might or might not have been calculated yet, but is promised to be (made) available when needed .
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A Future represents a potential value, or error, that will be available at some time in the future . A Future can be complete with a value or with an error. Programmers can plug callbacks for each case. Futures and async and await keywords are used to perform asynchronous operations in Dart.1 Oca 2021
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