TimeSpan.Humanize should offer an "age" format

[louis-z]

Using a TimeSpan to express an age, I would like to output that information in one of 2 ways

• either as an hyphenated adjectival phrase (e.g. a "10-week-old" cat), or
• as a non-hyphenated phrase (e.g. the cat is "10 weeks old")

If you feel it would benefit the product, I'd be interested in implementing it.

[louis-z]

I mentioned using the Humanize method for this, but it would require adding at least one new optional parameter, right? Would it make more sense to introduce new extension methods for TimeSpan instead? I was thinking of something along the lines of:

• ToHyphenatedAge() for the pre-noun adjective form ("a 10-year-old cat") or noun form ("the 10-year-old")
• ToAge(), for the post-noun adjective form ("the cat is 10 years old")

Not quite sure how to better express it succinctly... 🤔 Suggestions are welcome.

[louis-z]

For non-English cultures, maybe

• ToAge() could return the same thing as Humanize(maxUnit: TimeUnit.Year) (until someone defines a different culture-specific behavior, if need be)
• ToHyphenatedAge could simply return an empty string (as most cultures know nothing about hyphenated age, what other default value would make more sense?)

@clairernovotny,
@MehdiK,
what do you think?