# Concatenation in the @select-based future

**URL:** <https://discourse.flucoma.org/t/concatenation-in-the-select-based-future/1439>\
**Category:** Usage Questions\
**Created:** [May 9, 2022, 4:32pm UTC](https://discourse.flucoma.org/t/concatenation-in-the-select-based-future/1439 "2022-05-09T16:32:54Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![rodrigo.constanzo](https://discourse.flucoma.org/user_avatar/discourse.flucoma.org/rodrigo.constanzo/32/12_2.png) [@rodrigo.constanzo](https://discourse.flucoma.org/u/rodrigo.constanzo)\
**Post date:** [May 9, 2022, 6:58pm UTC](https://discourse.flucoma.org/t/concatenation-in-the-select-based-future/1439/6 "2022-05-09T18:58:05Z")

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> [@tremblap](#):
>
> I’m literally copying the chain and writing at the right place with bufcompose, old school.

I imagined that may be the case. It just obviously breaks every time you change anything upstream when doing this.

> [@tremblap](#):
>
> With students we also use the more garage joining of 2 lists.

Probably a safe way to do things, particularly with the native `fluid.buf2list` and `fluid.list2buf`, but is an awkward “domain change” having to just to `zl` to do some processing before going right back into a `buffer~` to carry on the native `fluid.stuff~`.

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