# Array types question
**URL:** https://discourse.julialang.org/t/array-types-question/23938
**Category:** New to Julia
**Created:** [May 6, 2019, 10:44pm UTC](https://discourse.julialang.org/t/array-types-question/23938 "2019-05-06T22:44:56Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Charles\_Parker](https://discourse.julialang.org/u/Charles_Parker)
#### Post date: [May 6, 2019, 10:44pm UTC](https://discourse.julialang.org/t/array-types-question/23938/1 "2019-05-06T22:44:56Z")
From the REPL:
julia\> fubar = [1 2 3]
1×3 Array{Int64,2}:
1 2 3
julia\> typeof(fubar)
Array{Int64,2}
Q: Where did Array{Int64,2) come from?
Thanx … Charlie
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### Author:  [@mbauman](https://discourse.julialang.org/u/mbauman)
#### Post date: [May 6, 2019, 10:50pm UTC](https://discourse.julialang.org/t/array-types-question/23938/2 "2019-05-06T22:50:43Z")
What part of `Array{Int64, 2}` are you wondering about?
- `Array` is the builtin array type that’s constructed with the `[]` syntax. It has two parameters:
- `Int64` is the type of its elements — everything you put inside the `[]` were integers
- `2` is the number of dimensions. You used space delimiters which does horizontal concatenation and thus creates a 1-row matrix. If you separated the integers with commas, then you’d get a 1-dimensional vector instead.
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### Author:  [@Charles\_Parker](https://discourse.julialang.org/u/Charles_Parker)
#### Post date: [May 7, 2019, 2:37am UTC](https://discourse.julialang.org/t/array-types-question/23938/3 "2019-05-07T02:37:21Z")
It was the 2; I knew about the Int64. I expected a 1 because it was one dimensional.
Thanx for the explanation … Charlie