hang on, what does the "..." in hcat(a...) means
On Monday, May 26, 2014 1:47:21 AM UTC+8, Ethan Anderes wrote:
>
> Right, hcat(a…) does that (up to a transpose since julia stores things in
> column major order ).
>
> julia> a = Array(Array, 0)
> 0-element Array{Array{T,N},1}
>
> julia> push!(a, [1, 2])
> 1-element Array{Array{T,N},1}:
> [1,2]
>
> julia> push!(a, [3, 4])
> 2-element Array{Array{T,N},1}:
> [1,2]
> [3,4]
>
> julia> b = hcat(a...)
> 2x2 Array{Int64,2}:
> 1 3
> 2 4
>
> julia> b[:, 2]
> 2-element Array{Int64,1}:
> 3
> 4
>
> On Sunday, May 25, 2014 10:42:38 AM UTC-7, Freddy Chua wrote:
>
> I mean, is there a function that allows me to take in a and return a
>> matrix?
>>
>> b = convert_to_matrix(a)
>>
>> b[:, 2] = [2,4]
>>
>> On Monday, May 26, 2014 1:36:47 AM UTC+8, Freddy Chua wrote:
>>>
>>> For example
>>>
>>> a = Array(Array, 0)
>>>
>>> push!(a, [1, 2])
>>> push!(a, [3, 4])
>>>
>>> Gives me an array of array. Can I get a matrix easily in this way?
>>>
>>>
>>>
