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Just a concept of gather-like method #1966

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@RomanMIzulin RomanMIzulin commented Nov 23, 2024

Before processing further, here a little snippet how it could look like.

  • I have double checked that there are no unrelated changes in this pull request (old patches, accidental config files, etc)
  • I have created at least one test case for the changes I have made
  • I have updated the documentation for the changes I have made
  • I have added my changes to the CHANGELOG.md

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async with anyio.create_task_group() as tg:
containers_t = tuple(containers)
results: list[IOResult] = len(containers_t)*[IOResult(None)]
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you can use a dict[int, IOResult[R, E]] here instead. Where int is the index of the running task.

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for i, coro in enumerate(containers_t):
tg.start_soon(run_task, coro, i)
return tuple(results)
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and return a tuple sorted by keys of the this dict.

])
def test_gather(containers, expected):
"""Test partition function."""
assert gather(containers) == expected
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This should not be possible. You cannot mix Future and FutureResult in one operation without an explicit cast.

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(from mypy's point of view, I mean)

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@RomanMIzulin RomanMIzulin Nov 24, 2024

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It is not supposed to mix IO operations that can and can not fail? Or it is just mypy limitation?

@@ -1,4 +1,5 @@
from returns.methods.cond import cond as cond
from returns.methods.gather import gather as gather
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Let's create a new file: async_.py and put it there.

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@RomanMIzulin RomanMIzulin Nov 24, 2024
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Is naming of the method good(gather)?

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yeap

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codecov bot commented May 2, 2025

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (82ef3ef) to head (5bab4bc).
Report is 317 commits behind head on master.

Additional details and impacted files
@@ Coverage Diff @@
## master #1966 +/- ##
==========================================
 Coverage 100.00% 100.00% 
==========================================
 Files 80 82 +2 
 Lines 2485 2592 +107 
 Branches 437 45 -392 
==========================================
+ Hits 2485 2592 +107 

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