Migrate.u32.first: def of bend-kit-migrate@0.3.0.0
Import: import bend-kit-migrate@0.3.0.0/migrate.bend as Migrate
Lines 319-322 of bend-kit-migrate@0.3.0.0/migrate.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-migrate@0.3.0.0/migrate.bend&start_line=319&end_line=322

import Base

def u32.first(+len: U32, r: Array<U32> & U32) -> Maybe<&2, U32>:
  (a, +c) = r
  +lead0 = U32.is_eq(c, 48) && U32.is_lt(1, len)
  u32.go(U32.to_nat(len), (a, c), 0, 0, U32.is_lt(0, len) && U32.is_lt(len, 11) && Bool.not(lead0))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  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.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=bend-kit-migrate@0.3.0.0/migrate.bend&name=u32.go