README.md

Error Handling Blogpost

The code in this repo is just example code which compliments this blogpost (read it for more details!). The tests are just meant to be example references (a lot of them fail on purpose) for the table in this README.

Trigger	Handler	Compatible?	Code
raise	rescue	✅	Link
raise	catch/1	❌	Link
raise	catch/2	✅	Link
throw	rescue	❌	Link
throw	catch/1	✅	Link
throw	catch/2	✅	Link
exit	rescue	❌	Link
exit	catch/1	❌	Link
exit	catch/2	✅	Link
:erlang.error	rescue	✅	Link
:erlang.error	catch/1	❌	Link
:erlang.error	catch/2	✅	Link

Here is the same table re-arranged by the Handler column, where you can see that catch/2 handles all cases:

Trigger	Handler	Compatible?	Code
raise	catch/2	✅	Link
throw	catch/2	✅	Link
exit	catch/2	✅	Link
:erlang.error	catch/2	✅	Link
raise	rescue	✅	Link
throw	rescue	❌	Link
exit	rescue	❌	Link
:erlang.error	rescue	✅	Link
raise	catch/1	❌	Link
throw	catch/1	✅	Link
exit	catch/1	❌	Link
:erlang.error	catch/1	❌	Link

TLDR: catch/2 will handle any kind of error.