In the forest of Fluttering widgets, I'm the Dart aimed at StackOverflow riddles.

Attention to those using flutter: It's important to note that you should avoid using a FutureBuilder like this:

FutureBuilder(
    future: _future()  // Do not instantiate like this

Doing so will lead to the future being re-executed with every rebuild. For a more detailed explanation, please refer to this StackOverflow post:

• Flutter FutureBuilder keeps Firing and rebuilding. It Generates a New Random Number on Every Rebuild - How can I Prevent This?