Source.fst64: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/spec/math/random/source.bend as Source
Lines 9-11 of bend-collections-laws-math@1.0.0.0/spec/math/random/source.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/spec/math/random/source.bend&start_line=9&end_line=11

import Base
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as W

def fst64(-S: Data, p: W.U64 & S) -> W.U64:
  (x, s) = p
  x

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/u64.bend&name=U64