Go2ErrorHandlingFeedback.md

# Go 2 Error Handling Feedback

This page is meant to collect and organize feedback about the Go 2 [error handling draft design](https://go.googlesource.com/proposal/+/master/design/go2draft-error-handling-overview.md).

Please post feedback on your blog, Medium, GitHub Gists, mailing lists, Google Docs, etc. And then please link it here.

Please help categorize the rest of the uncategorized proposals at the bottom.


# In support

This includes supporting the existing chaining/stacking of handlers without changes.

 - Aleksei Pavliukov, “[Use a function as a handle parameter](https://github.com/a5i/go-proposal/blob/master/use%20a%20function%20as%20a%20handle%20parameter.md)”, September 2018

 - Jeffrey Koehler, “[In support of Handle Chaining;  On Check](https://gist.github.com/deef0000dragon1/eb224ce4918d4ec3bdbaedf83a32aeb1)”, August 2018

 - Adam Bouhenguel "[In support of more declarative error handling](https://gist.github.com/ajbouh/716f8daba40199fe4d4d702704f3dfcc)", August 2018

 - Daniel Theophanes, "[Go 2 Design: Error Handling Net Win](https://docs.google.com/document/d/e/2PACX-1vSq487dLylRHjgtKV42EbTKHW1aHZaaso3MZ4HOG1OS-s8suOnR9WZz6ahzH4Kufs2vwKKDMhoj1_I6/pub)", August 2018

# Example code

Code changed to use the existing proposal.

- Mateusz Czapliński, "[Converting a fragment of real code with error handling to Go 2 'design draft'](https://gist.github.com/akavel/62d90bdc43088574c638eb3b16301a92)", August 2018


# Against

Just statements against without counter-proposals


# Counter-proposals

## Error handling with normal functions

- Greg Weber "[Alternative: handlers as functions and an error return?](https://gist.github.com/gregwebs/02479eeef8082cd199d9e6461cd1dab3)", August 2018, Updated September 2018

- Gigi Sayfan, “[Go 2 error handling feedback + alternative solution](https://gist.github.com/the-gigi/3c1acfc521d7991309eec140f40ccc2b)", September 2018

- Ruan Kunliang, "[Simple Error Handling for Go 2](https://gist.github.com/PeterRK/4f59579c1162cdbc28086f6b5f7b4fa2)", August 2018

## Labeled error handlers

- John Forstmeier, "[Labeled error handling](https://gist.github.com/forstmeier/b6c6a6d2f6f2f72a81a076322959c959)", September 2018

- Mikaël Cluseau, "[Multiple handlers, unambiguous on which return value is used](https://gist.github.com/mcluseau/1c20c3973fa3acb544d0505637be8d67)", September 2018

- Liam Breck, “[Missing Multiple Error Handlers (and an Alternate Handler Concept)](https://gist.github.com/networkimprov/c6cb3e2dff18d31840f2ef22e79d4a1e)”, August 2018


## Inlining

- Vlad Didenko, “[Error Handling with `grab | name()`](https://didenko.github.io/grab/grab_worth_it_0.1.1.html)”, November 2017

- Gooid, “[Inline style error handle(simple unambiguous)](https://github.com/gooid/gonotes/blob/master/inline_style_error_handle.md)”, August 2018


## Just remove chaining/stacking

 - Alessandro Arzilli, “[Against check as an operator and handler chains](https://gist.github.com/aarzilli/1a85db632edecc8159505e2c785882ed)”, August 2018


## Use defer

 - Victoria Raymond, “[Force 'check' to return error instead of allowing customized logic](https://gist.github.com/VictoriaRaymond/d70663a6ec6cdc59816b8806dccf7826)”, August 2018

 - Night-walker and daokoder, "[Extend and repurpose defer instead of introducing new syntax](https://github.com/daokoder/dao/issues/191#issuecomment-44784919 )", June 2014

## try/catch/finally syntax

- Jan Semmelink, “[if-else-undo-done](https://gist.github.com/jansemmelink/235228a0fb56d0eeba8085ab5f8178f3)”, August 2018

## Other

 - Einthusan Vigneswaran, “[Error Aware Keywords - return, defer, if, != and forcing the error object to be the last argument](https://gist.github.com/einthusan/24e18f6359a31b3537815284cde0f6de)”, September 2018

- Jozef Slezak, "[Use semicolons instead of new keywords: check+handle](https://gist.github.com/jozef-slezak/93a7d9d3d18d3fce3f8c3990c031f8d0)", September 2018

- Loki Verloren, “[Go 2 error handling feedback and my thoughts on how to improve programmer's efficiency and experience](https://gist.github.com/l0k1verloren/8aec03b8c48fdb5d3dab3a77153ce162)”, September 2018


## Uncategorized

Please help categorize the rest of the proposals here.



- Matt Dee "[Error Handling Should Support Custom Error Types](https://gist.github.com/mattdee123/a04f95ef5639489668cafd9c3b675a8c)", August 2018

- Shannon Wynter "[Error Handling as it can already be done](https://gist.github.com/freman/0b372e46c72f6a27652538b9930ee851)", August 2018

- DeedleFake, "[Feedback for Go 2 Design Drafts](https://deedlefake.com/2018/08/feedback-for-go-2-design-drafts/)", August 2018
- ZhiFeng Hu, "[[Go2ErrorHandling] Go should support Exception handler](https://www.netroby.com/view/3910)", August 2018
- Simon Howard, “[Go 2 errors response: One Handler Per Function](https://gist.github.com/fragglet/df6c5471771d87b2ad597d2efc57cb3e)”, August 2018

 - Paul Borman, “[Arguments against the Go 2 error handling proposal](https://gist.github.com/pborman/c69e79690d86dfc5c371f096be22930c)", August 2018

- Savino Pio Liguori, "[Feedback for Go2 error handling design](https://gist.github.com/8lall0/cb43e1fa4aae42bc709b138bda02284e)", August 2018

 - Blake Mizerany, “[How best to account for partial writes when using check/handle?](https://gist.github.com/bmizerany/fcd0348bda96edce05a4fc7426e47751)”, August 2018

 - Garrus, "[Another style of syntactic sugar on error handling](https://gist.github.com/garrus/5b1f73a7640726c92273700eabed9056)", August 2018

 - Marlon Che, "[How about separating check and handle?](https://gist.github.com/marlonche/4e5d4e5aec0555958ec1f181991325f6)", August 2018

 

- Patrick Kelly, "[handling more than just errors in go](https://medium.com/@phlatphrog/handling-more-than-just-errors-in-go-f97c5aa2eac4)", August 2018




## Adding Your Feedback

Please format all entries as below.

- _Your Name_, “[_Title_](#URL)”, _month year_

To make it easier to see new feedback, please add your new proposal to the top of the section it is place in.