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Avoid making a 10G array for no reason #15660

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Apr 1, 2016
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Avoid making a 10G array for no reason #15660

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3 changes: 1 addition & 2 deletions base/Enums.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -15,8 +15,7 @@ Base.read{T<:Enum}(io::IO, ::Type{T}) = T(read(io, Int32))
# generate code to test whether expr is in the given set of values
function membershiptest(expr, values)
lo, hi = extrema(values)
sv = sort(values)
if sv == [lo:hi;]
if length(values) == hi - lo + 1
:($lo <= $expr <= $hi)
elseif length(values) < 20
foldl((x1,x2)->:($x1 || ($expr == $x2)), :($expr == $(values[1])), values[2:end])
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