How to fill an array with a given value (not object reference)?

Question

As a followup to this question, how can you create an array filled with copies rather than references in Julia?

To use an example, how to create a function like fill that behaves like a when modifying elements of the array?

julia> a = [[],[]]
2-element Array{Array{Any,1},1}:
 Any[]
 Any[]

julia> push!(a[1],1.0)
1-element Array{Any,1}:
 1.0

julia> a
2-element Array{Array{Any,1},1}:
 Any[1.0]
 Any[]

julia> b = fill([],2)
2-element Array{Array{Any,1},1}:
 Any[]
 Any[]

julia> push!(b[1],1.0)
1-element Array{Any,1}:
 1.0

julia> b
2-element Array{Array{Any,1},1}:
 Any[1.0]
 Any[1.0]

Answer 1

Comprehension, could help:

julia> a=[[] for i=1:4]
4-element Array{Array{Any,1},1}:
 Any[]
 Any[]
 Any[]
 Any[]

julia> push!(a[1],1)
1-element Array{Any,1}:
 1

julia> a
4-element Array{Array{Any,1},1}:
 Any[1]
 Any[]
 Any[]
 Any[]