- `Buffer.lines()` returns `LineIterator` which yields line using `.read_line()`. - `Reader.bytes()` now takes `&mut self` instead of `self`. - `Reader.read_until()` swallows `EndOfFile`. This also affects `.read_line()`.
do
compile-fail tests, run-fail tests, and run-pass tests.
&fn(A)->B
|A|->B