[go-nuts] Generic error handling with panic, recover, and defer

[Marcos César de Oliveira]

With go 1.18 generics implementation it is now possible to provide error 
handling functions in a fashion similar to the "try" proposal. I wrote a 
small library that implements this approach: https://github.com/mcesar/must.

An example of usage is as follows:

package main
import (
    "fmt"
    "os"
    "github.com/mcesar/must"
)
func main() {
    fmt.Println(f())
}
func f() (err error) {
    defer must.Handle(&err)
    f := must.Do(os.Open("file"))
    defer f.Close()
    // ...
    return nil
}

This idea is not new, but I think it is worthwhile to have an 
implementation to experiment with.

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