Module T.Period

A period is the number of seconds between two times.

Arithmetic operations

include Period.S
type +'a period constraint 'a = [< Period.date_field ]

Type of a period.

Period is an additive monoid

val empty : 'a period

The empty period.

val add : 'a period -> 'a period -> 'a period

Addition of periods.

val sub : 'a period -> 'a period -> 'a period

Substraction of periods.

val opp : 'a period -> 'a period

Opposite of a period.

Periods are comparable

val equal : 'a period -> 'b period -> bool

Equality function between two periods.

  • since 1.09.0
val compare : 'a period -> 'b period -> int

Comparison function between two periods.

val hash : 'a period -> int

Hash function for periods.

  • since 2.0
val length : 'a period -> second

Number of seconds of a period.

val mul : 'a period -> 'a period -> 'a period

Multiplication.

val div : 'a period -> 'a period -> 'a period

Division.

Constructors

val make : int -> int -> second -> 'a period

make hour minute second makes a period of the specified length.

val lmake : ?hour:int -> ?minute:int -> ?second:second -> unit -> 'a period

Labelled version of make. The default value is 0 for each argument.

val hour : int -> 'a period

hour n makes a period of n hours.

val minute : int -> 'a period

minute n makes a period of n minutes.

val second : second -> 'a period

second n makes a period of n seconds.

Getters

val to_seconds : 'a period -> second

Number of seconds of a period. @example to_seconds (make 1 2 3) returns 3600 + 120 + 3 = 3723.

  • since 1.04
val to_minutes : 'a period -> float

Number of minutes of a period. The resulting fractional part represents seconds. @example to_minutes (make 1 2 3) returns 60 + 2 + 0.05 = 62.05.

  • since 1.04
val to_hours : 'a period -> float

Number of hours of a period. The resulting fractional part represents minutes and seconds. @example to_hours (make 1 3 0) returns 1 + 0.05 = 1.05.

  • since 1.04