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Why doesn't the value of a state change in the same useEffect hook?

Imagine if I have this code:

const [example, setExample] = useState(false);

useEffect(() => {
  setExample(true);
  console.log(example);
}, []);

Why does it print out false instead of true? It also does this when I log it after an interval, e.g.:

setTimeout(() => console.log(example), 1000); // false

I'm sure there must be a reason to this, but I simply do not know that reason, and I can't find anything about it online.

about 4 years ago · Juan Pablo Isaza
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