Michael Howell acc269d65b
Rollup merge of #100462 - zohnannor:master, r=thomcc
Clarify `array::from_fn` documentation

I've seen quite a few of people on social media confused of where the length of array is coming from in the newly stabilized `array::from_fn` example.

This PR tries to clarify the documentation on this.
2022-10-23 14:48:13 -07:00
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