Update to algebra 2.7.0 #1115
Update to algebra 2.7.0 #1115
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cquiroz
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cquiroz
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Thanks a lot for this. I was expecting the change to be less extensive. Is it so because there are duplicates between algebra and spire?
Why is Order now required in many more places?
| lazy val munitDiscipline = "1.0.9" | ||
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| lazy val algebraVersion = "2.2.3" | ||
| lazy val algebraVersion = "2.7.0" |
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Should this be rename to catsVersion?
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Yeah, catsVersion = algebraVersion now. But since we don't explicitly depend on cats, I think this is fine for now.
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| final class TruncatedDivisionOps[A](lhs: A)(using ev: TruncatedDivision[A]): | ||
| def toBigIntOpt: Opt[BigInt] = ev.toBigIntOpt(lhs) | ||
| // def toBigIntOpt: Opt[BigInt] = ev.toBigIntOpt(lhs) // TODO port to algebra? |
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This seems to be an API change, why?
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Could it be implemented in spire?
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For some reason it wasn't included in typelevel/algebra#247.
I think it would be good if we could continue to implement it in spire, but I wasn't sure how unless we introduce a new typeclass? Any ideas?
| * `sgn(z) = z / abs(z) = abs(z) / z` | ||
| */ | ||
| def complexSignum(implicit f: Field[T], n: NRoot[T], s: Signed[T]): Complex[T] = | ||
| def complexSignum(implicit f: Field[T], n: NRoot[T], o: Order[T], s: Signed[T]): Complex[T] = |
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Why is Order required now?
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Because these changes are so extensive, I wonder if we should release a second milestone after this PR merges. I think we should wait to do an RC/final release until #1111 is resolved. |
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Yes, we should do an M2 |
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This PR re-integrates spire with algebra 2.7.0. The following typeclasses from spire were ported into algebra:
GCDRingEuclideanRingSigned/SignedAdditiveCMonoid/SignedAdditiveAbGroupTruncatedDivision/TruncatedDivisionCRingDivisionRingFieldNow the spire definitions are removed and instead alias the algebra definitions.
Most of the churn here is due to the changes to
Signed. Previously, in spire,Signed <: Order. However, whenSignedwas ported to algebra it no longer extendsOrder. Instead it has a memberdef order: Order. This technique is used to avoid ambiguous implicits (e.g. howFunctorFilterdoesn't extendFunctorin cats).As a result of this change, an additional
Orderconstraint had to be propagated across spire where it used to be provided bySigned.