AsyncSnapshot<T> class Null safety. Immutable representation of the most recent interaction with an asynchronous computation . See also: StreamBuilder, which builds itself based on a snapshot from interacting with a Stream. FutureBuilder, which builds itself based on a snapshot from interacting with a Future.
Read moreWhat is snapshots in Dart?
A Dart snapshot is just a binary serialization of the token stream, generated from parsing the code . A snapshot is not a “snapshot of a running program”, it’s generated before the tokens are turned into machine code. So, no program state is captured in a snapshot.
Read moreWhat is snapshot hasData Flutter?
bool hasData. Returns whether this snapshot contains a non-null data value . This can be false even when the asynchronous computation has completed successfully, if the computation did not return a non-null value. For example, a Future<void> will complete with the null value even if it completes successfully.
Read moreWhat is snapshot is FutureBuilder in Flutter?
FutureBuilder<T> class Null safety . Widget that builds itself based on the latest snapshot of interaction with a Future . The future must have been obtained earlier, e.g. during State.
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