Correct, that syntax is not used anymore. I believe Jeff has expressed
interest in reserving {...} for type-tuple (`{Foo,Bar}` instead of
`Tuple{Foo,Bar}`), but it's likely to take many releases before it happens.
Op vrijdag 11 september 2015 19:21:26 UTC+2 schreef Alex M:
>
> 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]> 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!
>>
>
