julia> cl
485-element Array{Float64,1}:
4555.0
4601.0
4693.0
4678.0
⋮
5821.0
5854.0
5828.0
julia> lagcl = [0, cl[1:end-1]]
485-element Array{Float64,1}:
0.0
4555.0
4601.0
4693.0
⋮
5842.0
5821.0
5854.0
Then thinking to make the types of elements to be the same, I changed
the above to the following (notice it is 0.0 instead of 0 at the first
element). lagcl is only a temp array in a function that is called only
at initialization time and lagcl[1] is actually not referenced at all.
But the speed of my app after the initialization dropped to half.
Nothing else was changed, and I verified it by changing 0.0 back to 0 at
the first element. Could anyone explain?
julia> lagcl = [0.0, cl[1:end-1]]
485-element Array{Float64,1}:
0.0
4555.0
4601.0
4693.0
⋮
5842.0
5821.0
5854.0
