Expected Alternatives

expected reviews and mentions

• Functional Programming in Modern C++: The Imperatives Must Go – Victor Ciura [video]
  2 projects | news.ycombinator.com | 13 Aug 2023
• Functional exception-less error handling with C++23's optional and expected
  4 projects | /r/cpp | 18 Apr 2023
• C++23's New Fold Algorithms - C++ Team Blog
  1 project | /r/cpp | 13 Apr 2023

  On this topic Sy Brand is a guarantee, in fact he did the https://github.com/TartanLlama/expected and several presentation of the subject.

• What is the status of the monadic operations for std::expected? It seems like they made it into the standard for C++23, but they don't actually seem to be available in the std::expected implementation (in MSVC's STL)
  3 projects | /r/cpp | 28 Mar 2023

  In the meantime, I may use the TartanLlama implementation (here) and plan around replacing it with the real deal in the near future.

• ADSP Episode 114: Rust, Val, Carbon, ChatGPT & Errors with Barry Revzin!
  1 project | /r/cpp | 27 Jan 2023

  Sy Brand's tl::expected

• Daily bit(e) of C++ | Error handling
  1 project | /r/programming | 8 Jan 2023

  expected is my favourite little part of cpp23, I’m using it often in codebase with https://github.com/TartanLlama/expected 😁

• Noticing the the difference in coding when going back to C++
  1 project | /r/rust | 19 Oct 2022
• What are some cool modern libraries you enjoy using?
  32 projects | /r/cpp | 18 Sep 2022

  outcome and/or expected

• Do you use builder pattern?
  2 projects | /r/cpp | 31 Aug 2022
• Why should I have written ZeroMQ in C, not C++ (2012)
  2 projects | news.ycombinator.com | 12 Aug 2022

  Eventually you'll be able to use std::expected in C++23!

  https://en.cppreference.com/w/cpp/header/expected

  Don't throw exceptions, require the caller to handle errors and propagate them up the stack (everything returns an expected) if they cannot be handled. You are forced to model the error domains instead of just throwing an exception and assuming the caller knows to catch it and do something with it.

  Java has checked exceptions, but, Kotlin decided to abandon them.

  The nice codebases I have worked on stick to the Result type in Swift or Kotlin. And thus you are forced to 'translate' errors (exceptions?) as described in Alan Griffith's 'Exceptional Java'.

  https://accu.org/journals/overload/10/48/griffiths_406/

  "If a checked exception is thrown (to indicate an operation failure) by a method in one package it is not to be propagated by a calling method in a second package. Instead the exception is caught and "translated". Translation converts the exception into: an appropriate return status for the method, a checked exception appropriate to the calling package or an unchecked exception recognised by the system. (Translation to another exception type frequently involves "wrapping".)"

  If you can't wait for C++23, there's a single header implementation here.

  https://github.com/TartanLlama/expected

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