some convenient for IndexedReaderWriterStateT

[enzief]

No description provided.

[codecov-io]

Codecov Report

Merging #3336 into master will decrease coverage by 0.03%.
The diff coverage is 40%.

@@            Coverage Diff             @@
##           master    #3336      +/-   ##
==========================================
- Coverage   93.31%   93.27%   -0.04%     
==========================================
  Files         378      378              
  Lines        7688     7693       +5     
  Branches      206      206              
==========================================
+ Hits         7174     7176       +2     
- Misses        514      517       +3

Flag	Coverage Δ
#scala_version_212	93.34% <40%> (-0.04%)	⬇️
#scala_version_213	93.06% <40%> (-0.04%)	⬇️

Impacted Files	Coverage Δ
...in/scala/cats/data/IndexedReaderWriterStateT.scala	92.66% <40%> (-2.54%)	⬇️

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[barambani]

LGTM 👍