full on an AbstractArray should not be a no-op
#12251
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Unless Or, we could remove the fallback and only define |
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I think Alternatively, we could use |
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Can we just call this operation |
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Agreed, ref #12153 for the other meaning we've semi-arbitrarily given to |
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Yes, I think it's badly and unintuitively named and not all that common an operation. |
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I would be happy to get rid of it. That decision falls in line with "having the user think about types" complaint that we get from time to time but honestly we are not Matlab and thinking about types is unavoidable. |
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Removing |
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Is this still 0.5 material? @andreasnoack? |
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I don't think this should block 0.5. Many of the |
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I thought so too for a while but it doesn't do the right thing for |
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What are the use cases where you need a generic version of that operation that works over multiple views-of-AbstractArray types? You want a copy that includes the hidden parts of the backing data array? |
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We already have a generic method for |
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Or no, nevermind, scratch that. The method we don't have is using the type parameter of Symmetric or Triangular to determine the type of array to convert to. |
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The functions I had in mind were |
…nvert(Array, X) and add convert(AbstractArray, X) methods for Factorizations (#17066) * Implement convert(Matrix, SparseMatrixCSC) <- convert(Array, SparseMatrixCSC) chain, and reimplement full(SparseMatrixCSC) as a synonymous child of convert(Array, SparseMatrixCSC). * Implement convert(Vector, AbstractSparseVector) <- convert(Array, AbstractSparseVector) chain, and reimplement full(AbstractSparseVector) as a synonymous child of convert(Array, AbstractSparseVector). * Implement convert(Matrix, Bidiagonal) <- convert(Array, Bidiagonal) chain, and reimplement full(Bidiagonal) as a synonymous child of convert(Array, Bidiagonal). * Implement convert(AbstractMatrix, X) <- convert(AbstractArray, X) <- convert(Matrix, X) <- convert(Array, X) chains for Cholesky and CholeskyPivoted types, and reimplement full(X) for both types as synonymous children of convert(Array, X). * Implement convert(Matrix, Diagonal) <- convert(Array, Diagonal) chain, and reimplement full(Diagonal) as a synonymous child of convert(Array, Diagonal). * Implement convert(AbstractMatrix, Eigen) <- convert(AbstractArray, Eigen) <- convert(Matrix, Eigen) <- convert(Array, Eigen) chain, and reimplement full(Eigen) as synonymous child of convert(Array, Eigen). * Implement convert(AbstractMatrix, Hessenberg) <- convert(AbstractArray, Hessenberg) <- convert(Matrix, Hessenberg) <- convert(Array, Hessenberg) and convert(Matrix, HessenbergQ) <- convert(Array, HessenbergQ )chains, and reimplement full(X) for both types as synonmous children of convert(Array, X). * Implement convert(SymTridiagonal, LDLt) <- convert(AbstractMatrix, LDLt) <- convert(AbstractArray, LDLt) <- convert(Matrix, LDLt) <- convert(Array, LDLt) chain, and reimplement full(LDLt) as a synonymous child of convert(Array, LDLt). * Implement convert(AbstractMatrix, LQ) <- convert(AbstractArray, LQ) <- convert(Matrix, LQ) <- convert(Array, LQ) and convert(Matrix, LQPackedQ) <- convert(Array, LQPackedQ) chains, and reimplement full(X) for both types as a synonymous child of convert(Array, X). * Implement convert(AbstractMatrix, X) < convert(AbstractArray, X) <- convert(Matrix, X) <- convert(Array, X) chains for LU and LU{T,Tridiagonal{T}} types, and reimplement full(X) for both types as synonymous children of convert(Array, X). * Implement convert(AbstractArray, Union{QR,QRCompactWY}) <- convert(AbstractMatrix, Union{QR,QRCompactWY}) <- convert(Matrix, Union{QR,QRCompactWY}) <- convert(Array, Union{QR,QRCompactWY}) and convert(Matrix, Union{QRPackedQ,QRCompactWYQ}) <- convert(Array, Union{QRPackedQ,QRCompactWYQ}) chains, and reimplement full(Union{QR,QRCompactWY}) and full(Union{QRPackedQ,QRCompactWYQ}) as synonymous children of convert(Array, Union{QR,QRCompactWY}) and convert(Array, Union{QRPackedQ,QRCompactWYQ}) respectively. * Implement convert(AbstractMatrix, Schur) <- convert(AbstractArray, Schur) <- convert(Matrix, Schur) <- convert(Array, Schur) chain, and reimplement full(Schur) as a synonymous child of convert(Array, Schur). * Implement convert(AbstractMatrix, SVD) <- convert(AbstractArray, SVD) <- convert(Matrix, SVD) <- convert(Array, SVD) chain, and reimplement full(SVD) as a synonymous child of convert(Array, SVD). * Implements convert(Matrix, Symmetric) and convert(Matrix, Hermitian). Implements convert(Array, Union{Symmetric,Hermitian}) as a short child of the two preceding methods, and reimplements full(Union{Symmetric,Hermitian}) likewise. * Implements convert(Array, AbstractTriangular) as a short child of convert(Matrix, AbstractTriangular), and reimplements full(AbstractTriangular) as a short child of convert(Array, AbstractTriangular). * Implements convert(Array, Tridiagonal) and convert(Array, SymTridiagonal) as synonymous children of convert(Matrix, Tridiagonal) and convert(Matrix, SymTridiagonal) respectively, and reimplements full(Tridiagonal) and full(SymTridiagonal) as short children of convert(Array, Tridiagonal) and convert(Array, SymTridiagonal) respectively.
Towards #12251 part 2, replace all full(X) calls with convert(Array, X) and migrate tests
…(Array, X) and migrate tests" (#17564)
…method defs. as convert(Array, X) and add convert(AbstractArray, X) methods for Factorizations (JuliaLang#17066) * Implement convert(Matrix, SparseMatrixCSC) <- convert(Array, SparseMatrixCSC) chain, and reimplement full(SparseMatrixCSC) as a synonymous child of convert(Array, SparseMatrixCSC). * Implement convert(Vector, AbstractSparseVector) <- convert(Array, AbstractSparseVector) chain, and reimplement full(AbstractSparseVector) as a synonymous child of convert(Array, AbstractSparseVector). * Implement convert(Matrix, Bidiagonal) <- convert(Array, Bidiagonal) chain, and reimplement full(Bidiagonal) as a synonymous child of convert(Array, Bidiagonal). * Implement convert(AbstractMatrix, X) <- convert(AbstractArray, X) <- convert(Matrix, X) <- convert(Array, X) chains for Cholesky and CholeskyPivoted types, and reimplement full(X) for both types as synonymous children of convert(Array, X). * Implement convert(Matrix, Diagonal) <- convert(Array, Diagonal) chain, and reimplement full(Diagonal) as a synonymous child of convert(Array, Diagonal). * Implement convert(AbstractMatrix, Eigen) <- convert(AbstractArray, Eigen) <- convert(Matrix, Eigen) <- convert(Array, Eigen) chain, and reimplement full(Eigen) as synonymous child of convert(Array, Eigen). * Implement convert(AbstractMatrix, Hessenberg) <- convert(AbstractArray, Hessenberg) <- convert(Matrix, Hessenberg) <- convert(Array, Hessenberg) and convert(Matrix, HessenbergQ) <- convert(Array, HessenbergQ )chains, and reimplement full(X) for both types as synonmous children of convert(Array, X). * Implement convert(SymTridiagonal, LDLt) <- convert(AbstractMatrix, LDLt) <- convert(AbstractArray, LDLt) <- convert(Matrix, LDLt) <- convert(Array, LDLt) chain, and reimplement full(LDLt) as a synonymous child of convert(Array, LDLt). * Implement convert(AbstractMatrix, LQ) <- convert(AbstractArray, LQ) <- convert(Matrix, LQ) <- convert(Array, LQ) and convert(Matrix, LQPackedQ) <- convert(Array, LQPackedQ) chains, and reimplement full(X) for both types as a synonymous child of convert(Array, X). * Implement convert(AbstractMatrix, X) < convert(AbstractArray, X) <- convert(Matrix, X) <- convert(Array, X) chains for LU and LU{T,Tridiagonal{T}} types, and reimplement full(X) for both types as synonymous children of convert(Array, X). * Implement convert(AbstractArray, Union{QR,QRCompactWY}) <- convert(AbstractMatrix, Union{QR,QRCompactWY}) <- convert(Matrix, Union{QR,QRCompactWY}) <- convert(Array, Union{QR,QRCompactWY}) and convert(Matrix, Union{QRPackedQ,QRCompactWYQ}) <- convert(Array, Union{QRPackedQ,QRCompactWYQ}) chains, and reimplement full(Union{QR,QRCompactWY}) and full(Union{QRPackedQ,QRCompactWYQ}) as synonymous children of convert(Array, Union{QR,QRCompactWY}) and convert(Array, Union{QRPackedQ,QRCompactWYQ}) respectively. * Implement convert(AbstractMatrix, Schur) <- convert(AbstractArray, Schur) <- convert(Matrix, Schur) <- convert(Array, Schur) chain, and reimplement full(Schur) as a synonymous child of convert(Array, Schur). * Implement convert(AbstractMatrix, SVD) <- convert(AbstractArray, SVD) <- convert(Matrix, SVD) <- convert(Array, SVD) chain, and reimplement full(SVD) as a synonymous child of convert(Array, SVD). * Implements convert(Matrix, Symmetric) and convert(Matrix, Hermitian). Implements convert(Array, Union{Symmetric,Hermitian}) as a short child of the two preceding methods, and reimplements full(Union{Symmetric,Hermitian}) likewise. * Implements convert(Array, AbstractTriangular) as a short child of convert(Matrix, AbstractTriangular), and reimplements full(AbstractTriangular) as a short child of convert(Array, AbstractTriangular). * Implements convert(Array, Tridiagonal) and convert(Array, SymTridiagonal) as synonymous children of convert(Matrix, Tridiagonal) and convert(Matrix, SymTridiagonal) respectively, and reimplements full(Tridiagonal) and full(SymTridiagonal) as short children of convert(Array, Tridiagonal) and convert(Array, SymTridiagonal) respectively.
…h convert(Array, X) and migrate tests" (JuliaLang#17564)
…(Array, X) and migrate tests" (#17564)
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Closed by #24250 and the series of preceding pull requests. Best! |
The current fallback definition for
fullis a no-op for AbstractArray subtypes. @andreasnoack and I feel that this should beconvert(Array, a)instead as the implicit contract forfullis to return a dense array.Another common subtype that does not densify the result are
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