# Insert Array into another
**URL:** https://discourse.julialang.org/t/insert-array-into-another/65836
**Category:** New to Julia
**Tags:** question, arrays
**Created:** [August 4, 2021, 7:34pm UTC](https://discourse.julialang.org/t/insert-array-into-another/65836 "2021-08-04T19:34:18Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@victormororo](https://discourse.julialang.org/u/victormororo)
#### Post date: [August 4, 2021, 7:34pm UTC](https://discourse.julialang.org/t/insert-array-into-another/65836/1 "2021-08-04T19:34:18Z")
is there already something like this?
```julia
function insert!(a::Array{T,1}, i::Integer, item::Array{T,1})
_growat!(a, i, length(item))
bd = i + length(item) - 1
@inbounds for _i in i:bd a[_i] = item[_i-i+1] end
return a
end
```
[source to compare](https://github.com/JuliaLang/julia/blob/master/base/array.jl)
---
### Author:  [@oxinabox](https://discourse.julialang.org/u/oxinabox)
#### Post date: [August 4, 2021, 7:43pm UTC](https://discourse.julialang.org/t/insert-array-into-another/65836/2 "2021-08-04T19:43:11Z")
Maybe [`splice!`](https://docs.julialang.org/en/v1/base/collections/#Base.splice!) ?
> ```julia
> splice!(a::Vector, index::Integer, [replacement]) -> item
>
> ```
>
> …
> To insert `replacement` before an index `n` without removing any items, use `splice!(collection, n:n-1, replacement)`.
---
### Author:  [@victormororo](https://discourse.julialang.org/u/victormororo)
#### Post date: [August 4, 2021, 8:04pm UTC](https://discourse.julialang.org/t/insert-array-into-another/65836/3 "2021-08-04T20:04:44Z")
oh thank you!
i had not seen this one hehe, started with Julia yesterday
---
### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [October 23, 2021, 11:30am UTC](https://discourse.julialang.org/t/insert-array-into-another/65836/4 "2021-10-23T11:30:30Z")
@oxinabox, sorry but do not fully understand how to properly use `splice!()` to insert one array into another.
It doesn’t seem right to have to loop and adjust the indices after each insertion. A simple (perhaps too simple) example of inserting `Y` into `X`:
```julia
X = [11, 13, 15, 17]
Y = [12, 14, 16]
ix = [2, 3, 4]
k = 0
for (i,y) in zip(ix, Y)
splice!(X, i+k:i+k-1, y)
k += 1
end
julia> X
7-element Vector{Int64}:
11
12
13
14
15
16
17
```