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mention Ref for scalarizing a broadcast argument #45244

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mention Ref for scalarizing a broadcast argument #45244

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stevengj
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@stevengj stevengj commented May 9, 2022

The manual mentions tuples for treating a broadcast argument as a scalar, but it doesn't mention Ref (which seems to be quite common, and is even mentioned in the docstring for Ref).

@stevengj stevengj added docs This change adds or pertains to documentation broadcast Applying a function over a collection labels May 9, 2022
@Liozou
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Liozou commented May 9, 2022

Since Ref is mutable, there was a potential performance issue which led to the discussion at #35591. But the compiler may be able to work around this issue now, I don't know.

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Moelf commented May 9, 2022

IIRC compiler handles Ref quite well

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stevengj commented May 9, 2022

Oh, I see. Seems like this might become Fill after #39184, but probably best to close for now.

@stevengj stevengj closed this May 9, 2022
@giordano giordano deleted the stevengj-patch-3 branch May 11, 2022 14:10
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