Codec.left: def of bend-kit-postgres@0.3.0.0
Import: import bend-kit-postgres@0.3.0.0/codec.bend as Codec
Lines 274-276 of bend-kit-postgres@0.3.0.0/codec.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-postgres@0.3.0.0/codec.bend&start_line=274&end_line=276

import Base

def left(c: Cur) -> Cur & Nat:
  Cur{b, +i, +e, +ok} = c
  (Cur{b, i, e, ok}, U32.to_nat((e - i : U32)))

Uses (7):
  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=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=bend-kit-postgres@0.3.0.0/codec.bend&name=Cur