}
	return FromTimestamp(t.Add(duration)), nil
}

// dateDiff computes the difference between two times in terms of the
// `timePart` which can be years, months, days, hours, minutes or
// seconds. For difference in years, months or days, the time part,
// including timezone is ignored.
func dateDiff(timePart string, ts1, ts2 time.Time) (*Value, error) {
	if ts2.Before(ts1) {

			return -1, nil
		}
	}

	// Try to parse as a number of months
	if !strings.HasSuffix(s, "m") {
		return -1, errors.New("unknown format")
	}

	months, err := strconv.Atoi(strings.TrimSuffix(s, "m"))
	if err != nil {
		return -1, err
	}

	if months < minimumBitrotCycleInMonths {
		return -1, fmt.Errorf("minimum bitrot cycle is %d month(s)", minimumBitrotCycleInMonths)
	}

		// Testcase index 20
		{30 * 24 * time.Hour, "my_download_url", "1 month before the latest release"},
		{31 * 24 * time.Hour, "my_download_url", "1 month before the latest release"},
		{61 * 24 * time.Hour, "my_download_url", "2 months before the latest release"},
		{360 * 24 * time.Hour, "my_download_url", "1 year before the latest release"},

For example, it was clear that ideally it should be based on standard Python type hints.

Also, the best approach was to use already existing standards.

So, before even starting to code **FastAPI**, I spent several months studying the specs for OpenAPI, JSON Schema, OAuth2, etc. Understanding their relationship, overlap, and differences.

## Design { #design }

<style>
  main ul li { margin: 0.5em 0; }
</style>

## DRAFT RELEASE NOTES — Introduction to Go 1.N {#introduction}

**Go 1.N is not yet released. These are work-in-progress release notes.

		uint32_t elapsedt;  
		uint32_t msecs;  
		uint32_t hours;  
		uint32_t mins;  
		uint32_t secs;  
		uint32_t hunds;
		uint32_t timezone;  
		uint32_t tinterval;  
		uint32_t day;  
		uint32_t month;  
		uint32_t year;  
		uint32_t weekday;
	} TimeOfDayInfo;

	[op(0x1c)]
	int RemoteTOD([in,string,unique] wchar_t *servername,
			[out,unique] TimeOfDayInfo *info);

 plugin parameters and anything else.

 We once had a document that Vincent and I agreed upon and I was about to
 implement it and then I disappeared for 8 months so it never came to pass.

 So I guess it's important to figure out what people are using properties
 files for and see if we can't incorporate it all into the POM. Or if we do

### Detalles Técnicos: `root_path` { #technical-details-root-path }

Cuando montas una sub-aplicación como se describe arriba, FastAPI se encargará de comunicar el path de montaje para la sub-aplicación usando un mecanismo de la especificación ASGI llamado `root_path`.

		uint32_t elapsedt;  
		uint32_t msecs;  
		uint32_t hours;  
		uint32_t mins;  
		uint32_t secs;  
		uint32_t hunds;
		uint32_t timezone;  
		uint32_t tinterval;  
		uint32_t day;  
		uint32_t month;  
		uint32_t year;  
		uint32_t weekday;
	} TimeOfDayInfo;

	[op(0x1c)]
	int RemoteTOD([in,string,unique] wchar_t *servername,
			[out,unique] TimeOfDayInfo *info);

		"sum(2 + s.id)",
		"sum(t)",
		"avg(s.id[1])",
		"coalesce(s.id[1], 2, 2 + 3)",

		"cast(s as string)",
		"cast(s AS INT)",
		"cast(s as DECIMAL)",
		"extract(YEAR from '2018-01-09')",
		"extract(month from '2018-01-09')",

		"extract(hour from '2018-01-09')",
		"extract(day from '2018-01-09')",
		"substring('abcd' from 2 for 2)",
		"substring('abcd' from 2)",
		"substring('abcd' , 2 , 2)",