String.reverse_append_sym: law of bend-mathlib@0.8.1.0
Import: import bend-mathlib@0.8.1.0/string.bend as String
Lines 576-580 of bend-mathlib@0.8.1.0/string.bend: https://jend.leeeet.dev/read.txt?path=bend-mathlib@0.8.1.0/string.bend&start_line=576&end_line=580

import Base

# Reversing an append reverses and swaps the parts: reverse (a ++ b) = reverse b ++ reverse a, reversed to rewrite toward the simple side.
law reverse_append_sym:
  for a: String
  for b: String
  {String.append(String.reverse(b), String.reverse(a)) == String.reverse(String.append(a, b)) : String}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.reverse
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/string.bend&name=reverse_append