EXP: avoid cloning in gather, use iterators directly

[luizirber]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 58.82353% with 14 lines in your changes missing coverage. Please review.

Project coverage is 86.36%. Comparing base (de1a597) to head (6f183dc).
Report is 2 commits behind head on latest.

Files with missing lines	Patch %	Lines
src/core/src/sketch/minhash.rs	51.85%	13 Missing ⚠️
src/core/src/index/mod.rs	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           latest    #3394      +/-   ##
==========================================
- Coverage   86.47%   86.36%   -0.11%     
==========================================
  Files         137      137              
  Lines       16092    16106      +14     
  Branches     2219     2219              
==========================================
- Hits        13915    13910       -5     
- Misses       1870     1889      +19     
  Partials      307      307              

Flag	Coverage Δ
hypothesis-py	25.43% <ø> (ø)
python	92.32% <ø> (-0.08%)	⬇️
rust	62.15% <58.82%> (-0.12%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.