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help type inference for logical indexing #29633

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Oct 29, 2018
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4 changes: 4 additions & 0 deletions base/multidimensional.jl
Original file line number Diff line number Diff line change
Expand Up @@ -517,6 +517,10 @@ end
# We're looking for the n-th true element, using iterator r at state i
n = s[1]
n > length(L) && return nothing
#unroll once to help inference, cf issue #29418
idx, i = iterate(tail(s)...)
s = (n+1, s[2], i)
L.mask[idx] && return (idx, s)
while true
idx, i = iterate(tail(s)...)
s = (n+1, s[2], i)
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