Hi guys One thing I don t understand about Dagster What shou

Question

Hi guys One thing I don t understand about Dagster What should I do if I need to make dependent solids if they don t have outputs Similar in Airflow is ```task1 gt gt task2 gt gt task3``` My solids are kinda stateless don t return any values but their order is important

sandy · Answer

Hey Oleg here s an example <https docs dagster io examples nothing> Let me know if you have further questions

dwall · Answer

on the topic of `Nothing` one thing I thought about the other day is that this will probably be a pretty common pattern in the long term using `Nothing` to model task ordering dependencies between solids so do you think it s worth establishing best practices around nomeclature for these types of inputs and outputs

Oleg Agapov · Answer

Oh cool Thanks Sandy

Oleg Agapov · Answer

< sandy> is there any sugar for piping similar to pandas ```df pipe transform1 pipe transform2 ``` so to have ```solid1 pipe solid2 pipe solid3 ```

Oleg Agapov · Answer

if my previous question is not clear I have 10 tasks without outputs but have to be triggered one by one currently I have to do ```solid10 solid9 solid1 ``` I m trying to make it more visual and usable

max · Answer

^ there isn t currently sugar for this

max · Answer

we have previously considered stuff like `solid10 after solid9 ` etc but obviously that doesn t reverse the order like `pipe`

mrdavidlaing · Answer

< Oleg Agapov> I find myself with a similar desire for some kind of pipe sugar to chain sets of tasks together However I wonder if this is actually a something of a dagster code smell since it the means that the solids in the resulting pipeline will be harder to run independently for unit testing amp re running sections of the pipeline with intermediate data

mrdavidlaing · Answer

< max> Was it concerns like this that prevented the implementation of things like solid after

max · Answer

well yes if you can model the dependencies between solids using data you should slightly smiling face

max · Answer

sometimes sentinel values or pointer values are appropriate