Created
January 31, 2015 17:23
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us week number in pure ruby
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| def us_week_number us_date | |
| week = Time.local(us_date.year,us_date.month,us_date.day).strftime("%U").to_i | |
| if week == 0 | |
| Time.local(us_date.year - 1,12,31).strftime("%U").to_i | |
| else | |
| week | |
| end | |
| end |
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