Generic.prefix_fin: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/spec/math/generic.bend as Generic
Lines 139-141 of bend-collections-laws-crypto@1.0.0.0/spec/math/generic.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/generic.bend&start_line=139&end_line=141

import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/num.bend as N

def prefix_fin(~T: Data, ~of: Nat -> T, r: Nat & Bool) -> Result<&2, &2, N.NumError, T>:
  (+n, ok) = r
  checked_pick(~T, ~of, n, ok)

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/generic.bend&name=checked_pick
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/num.bend&name=NumError