I'm a novice, so forgive me if this is a silly question. I have made a
reasonable effort to find it in the manual and in google searches.
Q: What the heck is going on here, and where are questions like this
answered in the Julia documentation?
# One copy of Dict or two?
julia> x = y = Dict()
Dict{Any,Any} with 0 entries
# Exactly what I expect!
julia> is(x,y)
true
# Try assigning to a vector
julia> w = [Dict()]
1-element Array{Dict{Any,Any},1}:
Dict{Any,Any}()
julia> u = w[1] = Dict()
Dict{Any,Any} with 0 entries
# WHOA!! Two copies?
julia> is(u, w)
false
