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NullableArrays `map` perf
using NullableArrays
srand(1)
N = 5_000_000
A = rand(N)
B = rand(Bool, N)
C = Array(Float64, N)
X = NullableArray(A)
Y = NullableArray(A, B)
Z = NullableArray(Float64, N)
f(x::Float64) = 5 * x
function profile_map()
println("Method: map!(f, dest, src) (0 missing entries, lift=true)")
print(" for Array{Float64}: ")
map!(f, C, A);
@time map!(f, C, A);
print(" for NullableArray{Float64}: ")
map!(f, Z, X; lift=true);
@time map!(f, Z, X; lift=true);
println()
println("Method: map!(f, dest, src) (~half missing entries, lift=true)")
print(" for NullableArray{Float64}: ")
map!(f, Z, Y; lift=true);
@time map!(f, Z, Y; lift=true);
println()
println("Method: map(f, src) (0 missing entries, lift=true)")
print(" for Array{Float64}: ")
map(f, A);
@time map(f, A);
print(" for NullableArray{Float64}: ")
map(f, X);
@time map(f, X);
println()
println("Method: map(f, src) (~half missing entries, lift=true)")
print(" for NullableArray{Float64}: ")
map(f, Y; lift=true);
@time map(f, Y; lift=true);
println()
end
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