Hi,

I see that I can define my own type, and create instances of it like so:

~~~
type MyType{T}
    x::T
end

a = MyType{Int64}(3)
~~~

I tried to do similarly to create an array, but it fails... my first guess 
was that this might work:

    b = Array{Int64}(10, 11, 12)  # trying to get [10, 11, 12]

but maybe I need to specify the dimensions... `help(Array)` says I need to 
specify type and dims, so tried:

    b = Array{Int64, 3, 1}(10, 11, 12)  # (make a 3x1 array) but that's not 
right either.

I saw in the learnxinyminutes for Julia that you can do:

    b = Int64[10, 11, 12]

which seems to be a typed version of just `[10, 11, 12]`. Is that a 
shorthand syntax for some more general `Array{...}(...)` syntax?

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