ceph/src/boost/libs/leaf/example/print_file/readme.md

   1 # Print File Example
   2
   3 This directory has three versions of the same simple program, which reads a
   4 file, prints it to standard out and handles errors using LEAF, each using a
   5 different variation on error handling:
   6
   7 * [print_file_result.cpp](./print_file_result.cpp) reports errors with
   8   `leaf::result<T>`, using an error code `enum` for classification of failures.
   9
  10 * [print_file_outcome_result.cpp](./print_file_outcome_result.cpp) is the same
  11   as the above, but using `outcome::result<T>`. This demonstrates the ability
  12   to transport arbitrary error objects through APIs that do not use
  13   `leaf::result<T>`.
  14
  15 * [print_file_eh.cpp](./print_file_eh.cpp) throws on error, using an error code
  16   `enum` for classification of failures.