optimize memory group

[szpnygo]

No description provided.

[codecov]

Codecov Report

Merging #19 (2539aab) into main (aff18a0) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 2539aab differs from pull request most recent head 81e197b. Consider uploading reports for the commit 81e197b to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #19   +/-   ##
=======================================
  Coverage   66.57%   66.57%           
=======================================
  Files          55       55           
  Lines        2519     2519           
=======================================
  Hits         1677     1677           
  Misses        712      712           
  Partials      130      130           

Impacted Files	Coverage Δ
group/memory_group.go	96.29% <100.00%> (ø)