Modify examples to not call `unwrap`

[brson]

Several examples in url call unwrap. It's preferable to use ? to avoid teaching bad practices to new Rust coders. Modify the examples to have some hidden scaffolding to set up the Result type and use ? instead.

[luisbg]

This looks like a fun way to read example code, and help with cleanup.

I can work on this if nobody else is.

[luisbg]

Since the code examples are by default wrapped in a fn main() {, a direct switch to using ? will have the example fail in cargo test because () is expected instead of the Result the ? returns.

The way around it is to add a fn foo() -> Result<> { around the example, but this means making the examples a bit bigger than they should be.

Confirming here what is the approach you want to take.

Going to send a WIP patch to clarify what I mean. Let me know what you think.

[luisbg]

I am looking at this again. Will report soon. Sorry for the delay.

[luisbg]

Nice! Thanks @Enet4 😄