Edw590 / TryCatch-go

Try/Catch/Else/Finally for Go

TryCatch-go

Try/Catch/Else/Finally implementation for Go

Main credits go to Peter Verhas, more specifically this page: https://dzone.com/articles/try-and-catch-in-golang.

Might be useful to use this package alongside tracerr, to print the stacktrace and get exactly where the panic came from.

Changes made:

• Catch a panic(nil) by having a bool that tells if the code panicked or not, so that Tcef can know if the Catch function should execute or not. This is because panic(nil) is a valid panic (nil interface for example), but when a function returns normal, the recover() function returns nil. So recover() returns nil whether there is a panic or not. The idea takes care of that (checks if the function panicked or not). EDIT: it seems that with Go 1.21+, panic(nil) no longer panics with nil as pointed out by VonC in my answer here. But as I'm still using Go 1.20, I'm keeping the check here.
• Also added Python's Else clause, which executes if the Try clause didn't panic.
• Now the whole Tcef doesn't need the Catch clause != nil to catch the panic. It will always catch the panic and execute the Catch clause if there is one. If there is no Catch clause, it will just recover the panic and do nothing.

Usage

After initializing your module, get the library with:

go get github.com/Edw590/TryCatch-go@latest

Check the example on the examples folder.

License

This project is licensed under Apache 2.0 License - http://www.apache.org/licenses/LICENSE-2.0.