module Period:sig
..end
A period is the number of days between two dates.
type +[< field ]
p
include Period.S
val make : int -> int -> int -> Date_sig.S.t
make year month day
makes a period of the specified length.
val lmake : ?year:int -> ?month:int -> ?day:int -> unit -> Date_sig.S.t
Labelled version of make
.
The default value of each argument is 0
.
val year : int -> [< Date_sig.S.field > `Year ] period
year n
makes a period of n
years.
val month : int -> [< Date_sig.S.field > `Month `Year ] period
month n
makes a period of n
months.
val week : int -> [< Date_sig.S.field > `Day `Week ] period
week n
makes a period of n
weeks.
val day : int -> [< Date_sig.S.field > `Day `Week ] period
day n
makes a period of n
days.
exception Not_computable
val nb_days : [< field ] period -> int
Date_sig.S.Period.safe_nb_days
insteadNumber of days in a period.
Not_computable
if the number of days is not computable.nb_days (year 1)
raises Not_computable
because a year is
not a constant number of days.nb_days (day 6)
returns 6
val safe_nb_days : [< `Day | `Week ] period -> int
Equivalent to Date_sig.S.Period.nb_days
but never raises any exception.
val ymd : [< field ] period -> int * int * int
Number of years, months and days in a period.
ymd (make 1 2 3)
returns 1, 2, 3
.