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Generate a regular expression matching an ISO8601 calendar year

pattern_ISO8601_calendar_year.Rd

Generate a regular expression matching an ISO8601 calendar year

Usage

pattern_ISO8601_calendar_year(allow_before_year_1583 = FALSE)

Arguments

allow_before_year_1583

Should years between 0 and 1582 be allowed (they are only allowed in ISO 8601 with mutual agreement)

Details

Sign on the year (+ or -) is not supported (therefore years before 0000 are not supported). Years after 9999 are not supported.

References

https://en.wikipedia.org/wiki/ISO_8601

See also

Other ISO8601 patterns: pattern_ISO8601_any_datetime(), pattern_ISO8601_any_date(), pattern_ISO8601_calendar_datetime(), pattern_ISO8601_calendar_date(), pattern_ISO8601_ordinal_datetime(), pattern_ISO8601_ordinal_date(), pattern_ISO8601_timezone(), pattern_ISO8601_time(), pattern_ISO8601_week_datetime(), pattern_ISO8601_week_date()

Other Date management and conversion: dateany_to_date(), generate_dtc(), is_ISO8601_calendar_datetime(), is_ISO8601_calendar_date(), is_ISO8601_ordinal_datetime(), is_ISO8601_timezone(), is_ISO8601_time(), is_ISO8601_week_datetime(), make_dy(), pattern_ISO8601_any_datetime(), pattern_ISO8601_any_date(), pattern_ISO8601_calendar_datetime(), pattern_ISO8601_calendar_date(), pattern_ISO8601_ordinal_datetime(), pattern_ISO8601_ordinal_date(), pattern_ISO8601_timezone(), pattern_ISO8601_time(), pattern_ISO8601_week_datetime(), pattern_ISO8601_week_date(), sdtm_dtc_to_datetime(), sdtm_first_dose(), sdtm_time_actual()