Implement Base.:(==) for thunks
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added 2 commits
June 9, 2021 16:24
mzgubic
commented
Jun 9, 2021
| @test @thunk(3) isa Thunk | ||
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| @testset "==" begin | ||
| @test @thunk(3.2) == InplaceableThunk(@thunk(3.2), x -> x + 3.2) |
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Do we want to have this? Or should we separate between Thunks and InplaceableThnks?
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(@thunk(3.2)) == 3.2
Inplacable(@thunk(3.2), _->error("this shouldn;t be hit")) == 3.2
Thus by transitivity thye must be equal to each other
oxinabox
reviewed
Jun 9, 2021
| return element, (val, new_state) | ||
| end | ||
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| Base.:(==)(a::AbstractThunk, b::AbstractThunk) = unthunk(a) == unthunk(b) |
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There are some special case we might be able to optimize the positive cases like a===b to avoid unthunking.
idk if worth it though
oxinabox
approved these changes
Jun 9, 2021
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Looks like it adds some new ambiguities and makes Aqua CI unhappy now: Ambiguity #1
==(a::ChainRulesCore.AbstractThunk, b) in ChainRulesCore at /Users/jc/.julia/packages/ChainRulesCore/EgLlm/src/differentials/thunks.jl:26
==(::Any, ::Missing) in Base at missing.jl:76
Ambiguity #2
==(a, b::ChainRulesCore.AbstractThunk) in ChainRulesCore at /Users/jc/.julia/packages/ChainRulesCore/EgLlm/src/differentials/thunks.jl:27
==(::Missing, ::Any) in Base at missing.jl:75
Ambiguity #3
==(a::ChainRulesCore.AbstractThunk, b) in ChainRulesCore at /Users/jc/.julia/packages/ChainRulesCore/EgLlm/src/differentials/thunks.jl:26
==(w, v::WeakRef) in Base at gcutils.jl:5
Ambiguity #4
==(a, b::ChainRulesCore.AbstractThunk) in ChainRulesCore at /Users/jc/.julia/packages/ChainRulesCore/EgLlm/src/differentials/thunks.jl:27
==(w::WeakRef, v) in Base at gcutils.jl:4 |
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Needed for defining
to_vecfor@thunks, which is needed for testing all kinds of differentials