Implement PartialOrd for Month

[Munksgaard]

It would be nice if Month implemented PartialOrd.

For instance, I have a situation where I am aggregating data on a monthly basis, year by year. For that, I have a YearMonth struct like this:

struct YearMonth {
    year: i32,
    month: Month,
}

For the actual calculation, this is then used as key in a HashMap, or part of a tuple inside a Vec. I then want to find all the YearMonth for the last 12 months, which means I have a comparison like .filter(|year_month| year_month >= current_year_month.month.minus_one_year()) . Since Month does not implement PartialOrd, I cannot simply derive the implementation for YearMonth, but have to implement my own.

[djc]

Makes sense, would you be able to submit a PR?

[Munksgaard]

Makes sense, would you be able to submit a PR?

Yes, I can do that.

[Munksgaard]

Closed by #999