src/docs/expect_fun_call.txt

   1 ### What it does
   2 Checks for calls to `.expect(&format!(...))`, `.expect(foo(..))`,
   3 etc., and suggests to use `unwrap_or_else` instead
   4
   5 ### Why is this bad?
   6 The function will always be called.
   7
   8 ### Known problems
   9 If the function has side-effects, not calling it will
  10 change the semantics of the program, but you shouldn't rely on that anyway.
  11
  12 ### Example
  13 ```
  14 foo.expect(&format!("Err {}: {}", err_code, err_msg));
  15
  16 // or
  17
  18 foo.expect(format!("Err {}: {}", err_code, err_msg).as_str());
  19 ```
  20
  21 Use instead:
  22 ```
  23 foo.unwrap_or_else(|| panic!("Err {}: {}", err_code, err_msg));
  24 ```