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Fix ambiguity in _setindex_zero #669

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Aug 23, 2022
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Fix ambiguity in _setindex_zero #669

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4708d02
fix ambiguity in _setindex_zero
mcabbott Aug 22, 2022
c203f98
bump
mcabbott Aug 23, 2022
8be817b
Merge branch 'main' into mcabbott-patch-3
mcabbott Aug 23, 2022
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2 changes: 1 addition & 1 deletion Project.toml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
name = "ChainRules"
uuid = "082447d4-558c-5d27-93f4-14fc19e9eca2"
version = "1.44.3"
version = "1.44.4"

[deps]
Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
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4 changes: 2 additions & 2 deletions src/rulesets/Base/indexing.jl
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Expand Up @@ -101,8 +101,8 @@ and its element type is wide enough to allow `setindex!(dx, dy, inds...)`, which
It's unfortunate to close over `x`, but `similar(typeof(x), axes(x))` doesn't
allow `eltype(dy)`, nor does it work for many structured matrices.
"""
_setindex_zero(x::AbstractArray{<:Number}, dy, inds::Integer...) = fill!(similar(x, typeof(dy), axes(x)), ZeroTangent())
_setindex_zero(x::AbstractArray{<:Number}, dy, inds...) = fill!(similar(x, eltype(dy), axes(x)), ZeroTangent())
_setindex_zero(x::AbstractArray{<:Number}, dy, inds::Integer...) = fill!(similar(x, typeof(dy), axes(x)), false)
_setindex_zero(x::AbstractArray{<:Number}, dy, inds...) = fill!(similar(x, eltype(dy), axes(x)), false)
function _setindex_zero(x::AbstractArray, dy, inds::Integer...)
# This allows for types which don't define zero (like Vector) and types whose zero special (like Tangent),
# but always makes an abstract type. TODO: make it infer concrete type for e.g. vectors of SVectors
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