path: root/tvix/eval/src/tests/nix_tests/eval-okay-foldlStrict-lazy-initial-accumulator.nix

# Checks that the nul value for the accumulator is not forced unconditionally.
# Some languages provide a foldl' that is strict in this argument, but Nix does not.
builtins.foldl'
  (_: x: x)
  (throw "This is never forced")
  [ "but the results of applying op are" 42 ]