add fkeep! and children for sparse vectors#15585
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| immutable DroptolFuncVec <: Base.Func{3} end |
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AFAIK passing anonymous functions is fast now, so you don't need to use functors, right?
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Please see PR description.
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Updated to address comments. I looked and anonymous functions seems to work as well as functors but I rather keep the PRs small. |
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| function fkeep!{Tv,Ti}(x::SparseVector{Tv,Ti}, f, other, trim::Bool = true) | ||
| function fkeep!(x::SparseVector{Tv,Ti}, f, other, trim::Bool = true) |
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I think the extraneous {Tv,Ti} is the cause of the build failure.
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Yeah, will fix. Thanks
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| is `true`, this method trims `A.rowval` and `A.nzval` to length `nnz(A)` after dropping | ||
| elements. | ||
| through `A`, requiring `O(A.n, nnz(A))`-time for matrices and `O(nnz(A))`-time for vectors | ||
| and no space beyond that passed in. If `trim` is `true`, this method trims `A.rowval/A.nzind` and |
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trims
A.rowvalorA.nzind
like that?
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Updated to address @tkelman documentation comment. |
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Test error seems irrelevant (SubArrays) on one worker. |
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This is good to go from my P.O.V |
| xdrop = Base.droptol!(copy(x), 1.5) | ||
| @test exact_equal(xdrop, SparseVector(7, [1, 2, 5, 6, 7], [3., 2., -2., -3., 3.])) | ||
| Base.droptol!(xdrop, 2.5) | ||
| @test exact_equal(xdrop, SparseVector(7, [1, 6, 7], [3., -3., 3.])) |
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could you add a test of droptol! where the tolerance is exactly equal to one of the nonzero values? then I think this is done
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This will slightly clash with #15804 since it adds a few functor methods. Maybe they can be fixed in the same way in that PR. |
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hopefully @martinholters won't mind getting rid of a couple more there? |
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I won't. |
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Since these exist for sparse matrices it makes sense that they do for sparse vectors.
I used functors to keep the same style of code for matrices and vectors. If functors gives no performance benefit they can be swapped out for both matrices and vectors in a separate PR.