I see that I can do:
b = Array{Int64, 1}
#=> Array{Int64,1}
but why can't I push anything to that?:
push!(b, 10)
# ERROR: `push!` has no method matching push!(::Type{Array{Int64,1}},
::Int64)
Hm. Can't push anything to this either though:
~~~
c = []
#=> 0-element Array{None,1}
push!(c, 10)
ERROR: [] cannot grow. Instead, initialize the array with "T[]", where T is
the desired element type.
in push! at ./array.jl:457
~~~
