Date parser about show

[k0pernicus]

Hello :)

My solution is available here - it's really not perfect...

I can't wait to see your new video on the subject ;)

[belfz]

Hi @mre ! Thanks for this awesome challenge.

Here's my solution.

It uses std::str::FromStr trait and the ? (question mark) operator extensively (each parsing step returns a Result). It also checks whether a given day is valid in a given month (eg. 31 of April is considered invalid, because April has 30 days), although it's very forgiving when it comes to the special case of February (max. 29 is always allowed).

[belfz]

I updated my code - added leap year validation in case of February 29th 😉 .

[LivingInSyn]

Here's my submission, I used it as an excuse to learn a bit about nom. The tests aren't the BEST organized, but the majority are there:

https://gist.github.com/LivingInSyn/4a0b88a3cce0c58e9331f937aa520ab9

[mre]







Whelp, something like this could work, yeah.

let day: u32 = parts[0].rmatches(char::is_numeric).nth(0)?.parse()?;

Here's the code with some error handling:
https://play.rust-lang.org/?gist=487104fd94fedde58d75ba0f480e4d49&version=nightly&mode=debug

Whether you prefer that over the given solution is a matter personal taste I guess. 😉

[mre]

Thanks for that @k0pernicus 😃

[mre]

Thanks you two! ❤️

[SFrav]

Hey, instead of listing all options, can we do something like this:
let day: u32 = parts[0].rmatches(char::is_numeric).collect()?;

If so, how would you add error handling?

I’m liking the episodes by the way. Keep up the good work!

[mre]

Thanks for all the contribution. Show notes are here: https://github.com/hello-rust/show/tree/master/episode/7.
I really appreciate it and it makes the show better.
I might ask you to do more of that in the future and contribute to a future episode.
Might be more code samples, might be reviewing my code, might be an interview - who knows.
But I hope we can keep this going as I love to learn from your code and your feedback! ❤️

[LivingInSyn]

I'd be more than happy to help further, the 'assignment' was fun and an excuse to learn something new :)