Date, date-time, and duration S3 classes
A date (Date) is a double vector. Its value represent the number
of days since the Unix "epoch", 1970-01-01. It has no attributes.
A datetime (POSIXct is a double vector. Its value represents the
number of seconds since the Unix "Epoch", 1970-01-01. It has a single
attribute: the timezone (tzone))
A duration (difftime)
new_date(x = double())
new_datetime(x = double(), tzone = "")
new_duration(x = double(), units = c("secs", "mins", "hours", "days", "weeks"))
## S3 method for class 'Date'
vec_ptype2(x, y, ...)
## S3 method for class 'POSIXct'
vec_ptype2(x, y, ...)
## S3 method for class 'POSIXlt'
vec_ptype2(x, y, ...)
## S3 method for class 'difftime'
vec_ptype2(x, y, ...)
## S3 method for class 'Date'
vec_cast(x, to, ...)
## S3 method for class 'POSIXct'
vec_cast(x, to, ...)
## S3 method for class 'POSIXlt'
vec_cast(x, to, ...)
## S3 method for class 'difftime'
vec_cast(x, to, ...)
## S3 method for class 'Date'
vec_arith(op, x, y, ...)
## S3 method for class 'POSIXct'
vec_arith(op, x, y, ...)
## S3 method for class 'POSIXlt'
vec_arith(op, x, y, ...)
## S3 method for class 'difftime'
vec_arith(op, x, y, ...)x |
A double vector representing the number of days since UNIX
epoch for |
tzone |
Time zone. A character vector of length 1. Either |
units |
Units of duration. |
These function help the base Date, POSIXct, and difftime classes fit
into the vctrs type system by providing constructors, coercion functions,
and casting functions.
new_date(0) new_datetime(0, tzone = "UTC") new_duration(1, "hours")
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