Julia - using dictionary key as index for a multidimensional array - julia

Question

I have a dictionary with keys as shown:
testdict = Dict{Array{Int64,1},Float64}([1,3,1] => 0.0, [2,3,1] => 0.0, [1,3,2] => 0.0, [2,3,2] => -2.64899e-16, [2,1,2] => 0.858307, [1,2,1] => 0.0, [1,2,2] => 0.0, [2,2,1] => 0.0, [2,2,2] => 0.65796, [2,1,1] => -5.81556e-16, [1,1,2] => -3.50541e-16, [1,1,1] => 0.0)
These keys vary considerably both regarding range and length, they are initialized by an array in the beginning of the function Im writing...it could look like
[2,3,2]
for the dictionary above...,
or
[10,3,50,60]
creating a dictionary with keys
[1,1,1,1], [1,1,1,12] ... , [10, 3, 50, 59], [10,3, 50, 60]
And what I need to accomplish, is create a multidimensional array by
result_array = Array(Float64, tuple([2,3,2])
But then I need to populate the array with the values from the dictionary,
so I would need to set element [1,1,1] as
result_array[1,1,1] = 0.0
How can I use the keys from the dictionary to set the indices of the result_array with their respected values?

Answer 1

Splat the key to turn result_array[[1,1,1]...] into result_array[1,1,1].
testdict = Dict{Array{Int64,1},Float64}([1,3,1] => 0.0, [2,3,1] => 0.0, [1,3,2] => 0.0, [2,3,2] => -2.64899e-16, [2,1,2] => 0.858307, [1,2,1] => 0.0, [1,2,2] => 0.0, [2,2,1] => 0.0, [2,2,2] => 0.65796, [2,1,1] => -5.81556e-16, [1,1,2] => -3.50541e-16, [1,1,1] => 0.0)
result_array = Array(Float64,2,3,2)
for (k,v) in testdict
result_array[k...] = testdict[k]
end