Below.is_some: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/proofs/math/random/below.bend as Below
Lines 75-80 of bend-collections-laws-math@1.0.0.0/proofs/math/random/below.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/proofs/math/random/below.bend&start_line=75&end_line=80

import Base

def is_some(m: Maybe<&2, Nat>) -> Bool:
  match m:
    case None{}:
      False{}
    case Some{x}:
      True{}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat