act.flatten

[darky]

No description provided.

[MystPi]

What is this function generally used for? I can't think of anything off the top of my head.

[darky]

flatten unnest nested Action to one level

Result analog - https://hexdocs.pm/gleam_stdlib/gleam/result.html#flatten
Option analog - https://hexdocs.pm/gleam_stdlib/gleam/option.html#flatten

In another FP programming languages sometimes it's called chain

[MystPi]

I mean more of a practical use-case that one would typically use this function for. The function itself makes sense.

[darky]

For example, you use act.map on some Action and inside this act.map you change State via act/state.set
On result, you receive Action(Action) and you want unnest it before sending it to next function in pipeline

[MystPi]

Ah, that makes sense!