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Add rule for push!(::IdSet) #1494

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Oct 13, 2024
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Add rule for push!(::IdSet) #1494

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13 changes: 13 additions & 0 deletions src/lib/base.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,19 @@ end
end
end

# IdSet (needed for nested AD with implicit params)

grad_mut(::IdSet) = IdSet()

function _pullback(cx::AContext, ::typeof(push!), s::IdSet, @nospecialize(x))
res = push!(s, x)
function idset_push!_pullback(_)
Δ = pop!(grad_mut(cx, s), x, nothing)
(nothing, Δ, nothing)
end
return res, idset_push!_pullback
end

# Dictionaries

grad_mut(d::AbstractDict) = Dict()
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