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Function operator-=

boost::posix_time::operator-=

Synopsis

// In header: <boost/date_time/posix_time/date_duration_operators.hpp>


ptime operator-=(ptime & t, const boost::gregorian::years & y);

Description

Subtracts a years object from a ptime. Result will be same month and day-of-month as ptime unless original day was the last day of month. see date_time::years_duration for more details


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