Thanks!
Does it mean that now curly braces { } are not used anymore in the version
0.4?
On Friday, September 11, 2015 at 5:53:19 PM UTC+2, Yichao Yu wrote:
>
> On Fri, Sep 11, 2015 at 11:39 AM, Alex M <[email protected] <javascript:>>
> wrote:
> > Hello,
> > I am learning Julia.
> >
> > Both are arrays but of different types:
> >
> > julia> {}
> > 0-element Array{Any,1}
> >
> > julia> []
> > 0-element Array{None,1}
> >
> >
> > julia> [] == {}
> > true
> >
> > Now I am trying to push new data :
> >
> >
> > julia> a = []
> > julia> b = {}
> >
> >
> > julia> push!(a,"y")
> > ERROR: [] cannot grow. Instead, initialize the array with "T[]", where T
> is
> > the desired element type.
> > in push! at array.jl:457 (repeats 2 times)
> >
> >
> > But for [] it works:
> >
> > julia> push!(b,"y")
> > 1-element Array{Any,1}:
> > "y"
> >
> >
> > Also using {} I can create Dictionary:
> >
> > julia> {"a" => 3}
> > Dict{Any,Any} with 1 entry:
> > "a" => 3
> >
> >
> > Now I am very confused.
> >
> > 1) What is the meaning of { } ? is it a dictionary constructor or an
> array
> > constructor of type Any ?
>
> It was `Any[]` for 0.3. Deprecated for 0.4
>
> > 2) Why can't I push into [ ] ?
>
> Because the type is None. `[]` on 0.4 returns `Array{Any,1}` and that
> isn't a problem anymore.
>
> >
> > Thank you in advance!
>
