Is x a date-time object?

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Description

An instant is a specific moment in time. Most common date-time objects (e.g, POSIXct, POSIXlt, and Date objects) are instants.

Usage

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Arguments

x

an R object

Value

TRUE if x is a POSIXct, POSIXlt, or Date object, FALSE otherwise.

See Also

is.timespan, is.POSIXt, is.Date

Examples

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is.instant(as.Date("2009-08-03")) # TRUE
is.timepoint(5) # FALSE

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