Spec.le: def of bendtorch@1.3.0.0
Import: import bendtorch@1.3.0.0/spec.bend as Spec
Lines 68-76 of bendtorch@1.3.0.0/spec.bend: https://jend.leeeet.dev/read.txt?path=bendtorch@1.3.0.0/spec.bend&start_line=68&end_line=76

import Base

# a <= b, by recursion (simpler to reason about than Nat.is_le, which goes through Nat.cmp)
def le(a: Nat, b: Nat) -> Bool:
  match a b:
    case 0n _:
      True{}
    case 1n+p 0n:
      False{}
    case 1n+p 1n+q:
      le(p, q)

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat