PolynomialMutation.eta: def of unified-nsga-iii@0.2.2.0
Import: import unified-nsga-iii@0.2.2.0/polynomial_mutation.bend as PolynomialMutation
Lines 23-26 of unified-nsga-iii@0.2.2.0/polynomial_mutation.bend: https://jend.leeeet.dev/read.txt?path=unified-nsga-iii@0.2.2.0/polynomial_mutation.bend&start_line=23&end_line=26

import Base

def eta(op: Poly) -> F32:
  match op:
    case MkPoly{e}:
      e

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/polynomial_mutation.bend&name=Poly