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add BITS associated constant to PrimInt#246

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umanwizard wants to merge 1 commit intorust-num:masterfrom
umanwizard:bits_prim
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add BITS associated constant to PrimInt#246
umanwizard wants to merge 1 commit intorust-num:masterfrom
umanwizard:bits_prim

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cuviper commented Oct 19, 2022

Unfortunately, this is a breaking change for external implementors, especially since this trait isn't sealed.

It's tempting to add a default to 8 * mem::size_of::<Self>(), but nothing says that the entire value has to be numeric bits either. It could be a wrapper with some other extraneous metadata, for example.

#247 suggests a new trait, which would avoid a breaking change.

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