# A unified type of \`Tuple\` and \`Vector\`
**URL:** https://discourse.julialang.org/t/a-unified-type-of-tuple-and-vector/22552
**Category:** General Usage
**Tags:** question, type
**Created:** [March 30, 2019, 10:05pm UTC](https://discourse.julialang.org/t/a-unified-type-of-tuple-and-vector/22552 "2019-03-30T22:05:59Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@singularitti](https://discourse.julialang.org/u/singularitti)
#### Post date: [March 30, 2019, 10:05pm UTC](https://discourse.julialang.org/t/a-unified-type-of-tuple-and-vector/22552/1 "2019-03-30T22:05:59Z")
Sometimes I want my functions to work with both `Tuple`s and `Vector`s. Those functions are pure and are iterating through each element of the `Tuple`s and `Vector`s. Is there a unified type representing `Tuple`s and `Vector`s? Or I have to define
```julia
const TupOrVec = Union{Tuple, Vector}
```
Why does not Julia provide such a type for us?
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### Author:  [@jpsamaroo](https://discourse.julialang.org/u/jpsamaroo)
#### Post date: [March 30, 2019, 10:18pm UTC](https://discourse.julialang.org/t/a-unified-type-of-tuple-and-vector/22552/2 "2019-03-30T22:18:04Z")
Because what if a package implements some iterable 1-D container that you also want to be able to accept as input? Or what about an `Array{T, 3} where T` which is 3-dimensional but also iterable with `eachindex`? What about `Set`s? etc. etc.
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### Author:  [@singularitti](https://discourse.julialang.org/u/singularitti)
#### Post date: [March 30, 2019, 10:19pm UTC](https://discourse.julialang.org/t/a-unified-type-of-tuple-and-vector/22552/3 "2019-03-30T22:19:41Z")
That’s a good point. Thank you.
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### Author:  [@frankwswang](https://discourse.julialang.org/u/frankwswang)
#### Post date: [September 21, 2022, 3:16am UTC](https://discourse.julialang.org/t/a-unified-type-of-tuple-and-vector/22552/4 "2022-09-21T03:16:03Z")
Sorry I might be a bit late, but I don’t see why this contradicts the idea of defining a union type of `Vector` and `Tuple` (or, more precisely, `NTuple`) ? Thanks!
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### Author:  [@SteffenPL](https://discourse.julialang.org/u/SteffenPL)
#### Post date: [September 21, 2022, 9:12am UTC](https://discourse.julialang.org/t/a-unified-type-of-tuple-and-vector/22552/5 "2022-09-21T09:12:30Z")
I think the question was why such a `Union` is not part of the Julia base.
Sure everyone can define it for themself the `Union` of the collections they need, but for begin part of base it is to specific as there are many different use cases which would need other unions instead.