Thank you. What would be the work around? How can I push values
to defaultdict without changing any other value?
On Friday, July 3, 2015 at 3:35:39 PM UTC+2, Yichao Yu wrote:
>
> On Fri, Jul 3, 2015 at 9:29 AM, Ali Rezaee <arv....@gmail.com
> <javascript:>> wrote:
> > Hi,
> >
> > I have the following code:
> >
> > using DataStrucures
> > d= DefaultDict(ASCIIString,Array{Int64},Array{Int64}(0))
> >
> > push!(d["A"],2)
> > push!(d["B"],3)
> >
> > d
> > DataStructures.DefaultDict{ASCIIString,Array{Int64,N},Array{Int64,1}}
> with 2
> > entries:
> > "B" => [2,3]
> > "A" => [2,3]
> >
> >
> > Isn't it unexpected that when I push to any key, the value is pushed to
> all
> > the other keys as well?
>
> Yes, pretty much. Because the default value is stored by reference and
> you are mutating it with `push!`
>
> See the last paragraph of the corresponding section in the
> DataStructures.jl README[1]
>
> [1]
> https://github.com/JuliaLang/DataStructures.jl#defaultdict-and-defaultordereddict
>
>
> >
> > Thanks :)
>
