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Is x a difftime object?
is.difftime(x)
an R object
TRUE if x is a difftime object, FALSE otherwise.
is.instant(), is.timespan(), is.interval(), is.period().
is.instant()
is.timespan()
is.interval()
is.period()
# NOT RUN { is.difftime(as.Date("2009-08-03")) # FALSE is.difftime(make_difftime(days = 12.4)) # TRUE # }
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