TastyPancakes/Flux.jl
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better error message

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Mike J Innes 2018-04-30 12:09:15 +01:00
parent 159ca536ec
commit 73a51400b6
1 changed files with 1 additions and 1 deletions
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src/tracker/array.jl
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@ -41,7 +41,7 @@ end
Base.setindex!(xs::TrackedArray, v, i...) =
error("Can't differentiate `setindex!`")
back!(::TrackedArray) = error("Use back!(x, Δ)")
back!(::TrackedArray) = error("Value is not scalar; use `back!(sum(x))` or `back!(x, Δ)`")
# Fallthrough methods