Topics for the formatting chapter

[japaric]

• How to manually implement the Show trait, and access the {} formatter
• A full list of (formatting) argument types
• Implementing more than one formatting trait. I think we could reuse the example about the latitude/longitude of a city. We could offer two formats: 12.345° N (floating) and 12° 23' 34" (default).
• Formatter::pad, important to make {:>5} and {:<3} work on a custom Show implementation.
• Precision, how to implement {:0.5} and {:0.03}?
• fmt::Result, what kind of errors could arise from formatting?

[marioidival]

Hi, I'm closing this issue just to clean up the items that already exist. If you think this issue makes sense to stay open, please create a new issue with updated information and mention this one.

thanks!