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Is x a datey, durationy or datey_interval?

Source: R/datey.R, R/datey_interval.R, R/durationy.R
is_type.Rd

These methods will always return a scalar logical TRUE or FALSE:

  • is_datey() tests whether an object is a datey.

  • is_durationy() tests whether an object is a durationy.

  • is_datey_interval() tests whether an object is a datey_interval.

Usage

is_datey(x)

is_datey_interval(x)

is_durationy(x)

Arguments

x

The object to test.

Value

A logical scalar indicating whether x a datey, durationy or datey_interval as appropriate. Always FALSE or TRUE; never NULL or NA.

Examples

t <- datey(2000:2001)
t
#> [1] 2000-01-01.0 2001-01-01.0
is_datey(t)
#> [1] TRUE
is_datey(NULL)
#> [1] FALSE
is_datey(NA)
#> [1] FALSE

d <- durationy(0:2)
d
#> [1] 0 yr 1 yr 2 yr
is_durationy(d)
#> [1] TRUE
is_durationy(NULL)
#> [1] FALSE
is_durationy(NA)
#> [1] FALSE

interval <- datey(2000:2001) %to% datey(2001:2002)
interval
#> [1] [2000-01-01.0, 2001-01-01.0) [2001-01-01.0, 2002-01-01.0)
is_datey_interval(interval)
#> [1] TRUE
is_datey_interval(NULL)
#> [1] FALSE
is_datey_interval(NA)
#> [1] FALSE