# struct Time::Span

- Time::Span
- Struct
- Value
- Object

##
Overview

`Time::Span` represents one period of time.

A `Time::Span` initializes with the specified period. Different numbers of arguments generate a `Time::Span` in different length. Check all `#new` methods for details.

    Time::Span.new(nanoseconds: 10_000)                           # => 00:00:00.000010000
    Time::Span.new(hours: 10, minutes: 10, seconds: 10)           # => 10:10:10
    Time::Span.new(days: 10, hours: 10, minutes: 10, seconds: 10) # => 10.10:10:10

Calculation between `Time` also returns a `Time::Span`.

    span = Time.utc(2015, 10, 10) - Time.utc(2015, 9, 10)
    span       # => 30.00:00:00
    span.class # => Time::Span

Inspection:

    span = Time::Span.new(hours: 20, minutes: 10, seconds: 10)
    span.hours   # => 20
    span.minutes # => 10
    span.seconds # => 10

Calculation:

    a = Time::Span.new(hours: 20, minutes: 10, seconds: 10)
    b = Time::Span.new(hours: 10, minutes: 10, seconds: 10)
    c = a - b # => 10:00:00
    c.hours   # => 10

##
Included Modules

- Comparable(Time::Span)
- Steppable

##
Defined in:

time/span.cr

##
Constant Summary

MAX = `new(seconds: Int64::MAX, nanoseconds: 999999999)`
MIN = `new(seconds: Int64::MIN, nanoseconds: -999999999)`
ZERO = `new(nanoseconds: 0)`

##
Constructors

- .additive_identity : self

  Returns the additive identity of this type.

- .new(*, seconds : Int, nanoseconds : Int)

  Creates a new `Time::Span` from seconds and nanoseconds.

- .new(*, nanoseconds : Int)

  Creates a new `Time::Span` from the nanoseconds given

- .new(*, days : Int = 0, hours : Int = 0, minutes : Int = 0, seconds : Int = 0, nanoseconds : Int = 0)

  Creates a new `Time::Span` from the days, hours, minutes, seconds and nanoseconds given

##
Class Method Summary

- .zero : Time::Span

  Creates a new `Time::Span` representing a span of zero time.

##
Instance Method Summary

- #*(number : Int) : Time::Span

  Returns a `Time::Span` that is number times longer.

- #*(number : Float) : Time::Span

  Returns a `Time::Span` that is number times longer.

- #+(other : self) : Time::Span
- #+ : self
- #-(other : self) : Time::Span
- #- : Time::Span
- #/(number : Int) : Time::Span

  Returns a `Time::Span` that is divided by number.

- #/(number : Float) : Time::Span

  Returns a `Time::Span` that is divided by number.

- #/(other : self) : Float64
- #<=>(other : self)
- #abs : Time::Span

  Returns the absolute (non-negative) amount of time this `Time::Span` represents by removing the sign.

- #ago : Time

  Returns a `Time` that happens earlier by `self` than the current time.

- #days : Int64

  Returns the number of full days in this time span.

- #from_now : Time

  Returns a `Time` that happens later by `self` than the current time.

- #hours : Int32

  Returns the number of full hours of the day (`0..23`) in this time span.

- #inspect(io : IO) : Nil

  Appends this struct's name and instance variables names and values to the given IO.

- #microseconds : Int32

  Returns the number of microseconds of the second (`0..999999`) in this time span.

- #milliseconds : Int32

  Returns the number of milliseconds of the second (`0..999`) in this time span.

- #minutes : Int32

  Returns the number of full minutes of the hour (`0..59`) in this time span.

- #nanoseconds : Int32

  Returns the number of nanoseconds of the second (`0..999_999_999`) in this time span.

- #negative? : Bool

  Returns `true` if `self` represents a negative time span.

- #positive? : Bool

  Returns `true` if `self` represents a positive time span.

- #seconds : Int32

  Returns the number of full seconds of the minute (`0..59`) in this time span.

- #sign : Int32

  Returns the sign of this time span.

- #to_f : Float64

  Alias of `#total_seconds`.

- #to_i : Int64

  Returns the number of full seconds.

- #total_days : Float64

  Converts to a (possibly fractional) number of days.

- #total_hours : Float64

  Converts to a (possibly fractional) number of hours.

- #total_microseconds : Float64

  Converts to a number of microseconds.

- #total_milliseconds : Float64

  Converts to a number of milliseconds.

- #total_minutes : Float64

  Converts to a (possibly fractional) number of minutes.

- #total_nanoseconds : Float64

  Converts to a number of nanoseconds.

- #total_seconds : Float64

  Converts to a (possibly fractional) number of seconds.

- #total_weeks : Float64

  Converts to a (possibly fractional) number of weeks.

- #zero? : Bool

  Returns `true` if `self` represents a span of zero time.

### Instance methods inherited from module `Steppable`

step(*, to limit = nil, by step, exclusive : Bool = false, &) : Nil
step(*, to limit = nil, by step, exclusive : Bool = false) step

### Instance methods inherited from module `Comparable(Time::Span)`

<(other : T) : Bool <, <=(other : T) <=, <=>(other : T) <=>, ==(other : T) ==, >(other : T) : Bool >, >=(other : T) >=, clamp(min, max)
clamp(range : Range) clamp

### Instance methods inherited from struct `Struct`

==(other : YAML::Any)
==(other) : Bool ==, hash(hasher) hash, inspect(io : IO) : Nil inspect, pretty_print(pp) : Nil pretty_print, to_s(io : IO) : Nil to_s

### Class methods inherited from struct `Struct`

pre_initialize(address : Pointer) : Nil pre_initialize

### Instance methods inherited from struct `Value`

==(other : Log::Metadata::Value)
==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup

### Instance methods inherited from class `Object`

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(collection : Object) : Bool
in?(*values : Object) : Bool in?, inspect(io : IO) : Nil
inspect : String inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil!(message)
not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO) : Nil
to_json : String to_json, to_pretty_json(indent : String = " ") : String
to_pretty_json(io : IO, indent : String = " ") : Nil to_pretty_json, to_s(io : IO) : Nil
to_s : String to_s, to_yaml(io : IO) : Nil
to_yaml : String to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

### Class methods inherited from class `Object`

from_json(string_or_io : String | IO, root : String)
from_json(string_or_io : String | IO) from_json, from_yaml(string_or_io : String | IO) from_yaml

### Macros inherited from class `Object`

class_getter(*names, &block) class_getter, class_getter!(*names) class_getter!, class_getter?(*names, &block) class_getter?, class_property(*names, &block) class_property, class_property!(*names) class_property!, class_property?(*names, &block) class_property?, class_setter(*names) class_setter, def_clone def_clone, def_equals(*fields) def_equals, def_equals_and_hash(*fields) def_equals_and_hash, def_hash(*fields) def_hash, delegate(*methods, to object) delegate, forward_missing_to(delegate) forward_missing_to, getter(*names, &block) getter, getter!(*names) getter!, getter?(*names, &block) getter?, property(*names, &block) property, property!(*names) property!, property?(*names, &block) property?, setter(*names) setter

##
Constructor Detail

def self.additive_identity : self #

Returns the additive identity of this type.

This is `.zero`.

def self.new(*, seconds : Int, nanoseconds : Int) #

Creates a new `Time::Span` from seconds and nanoseconds.

Nanoseconds get normalized in the range of `0...1_000_000_000`, the nanosecond overflow gets added as seconds.

    Time::Span.new(seconds: 30)                 # => 00:00:30
    Time::Span.new(seconds: 5, nanoseconds: 12) # => 00:00:05.000000012

def self.new(*, nanoseconds : Int) #

Creates a new `Time::Span` from the nanoseconds given

Nanoseconds get normalized in the range of `0...1_000_000_000`, the nanosecond overflow gets added as seconds.

    Time::Span.new(nanoseconds: 500_000_000)   # => 00:00:00.500000000
    Time::Span.new(nanoseconds: 5_500_000_000) # => 00:00:05.500000000

def self.new(*, days : Int = 0, hours : Int = 0, minutes : Int = 0, seconds : Int = 0, nanoseconds : Int = 0) #

Creates a new `Time::Span` from the days, hours, minutes, seconds and nanoseconds given

Any time unit can be omitted.

    Time::Span.new(days: 1)                                                   # => 1.00:00:00
    Time::Span.new(days: 1, hours: 2, minutes: 3)                             # => 1.02:03:00
    Time::Span.new(days: 1, hours: 2, minutes: 3, seconds: 4, nanoseconds: 5) # => 1.02:03:04.000000005

##
Class Method Detail

def self.zero : Time::Span #

Creates a new `Time::Span` representing a span of zero time.

##
Instance Method Detail

def *(number : Int) : Time::Span #

Returns a `Time::Span` that is number times longer.

def *(number : Float) : Time::Span #

Returns a `Time::Span` that is number times longer.

def +(other : self) : Time::Span #
def + : self #
def -(other : self) : Time::Span #
def - : Time::Span #
def /(number : Int) : Time::Span #

Returns a `Time::Span` that is divided by number.

def /(number : Float) : Time::Span #

Returns a `Time::Span` that is divided by number.

def /(other : self) : Float64 #
def <=>(other : self) #
def abs : Time::Span #

Returns the absolute (non-negative) amount of time this `Time::Span` represents by removing the sign.

def ago : Time #

Returns a `Time` that happens earlier by `self` than the current time.

def days : Int64 #

Returns the number of full days in this time span.

    (5.days + 25.hours).days # => 6_i64

def from_now : Time #

Returns a `Time` that happens later by `self` than the current time.

def hours : Int32 #

Returns the number of full hours of the day (`0..23`) in this time span.

def inspect(io : IO) : Nil #
Description copied from struct Struct

Appends this struct's name and instance variables names and values to the given IO.

    struct Point
      def initialize(@x : Int32, @y : Int32)
      end
    end

    p1 = Point.new 1, 2
    p1.to_s    # "Point(@x=1, @y=2)"
    p1.inspect # "Point(@x=1, @y=2)"

def microseconds : Int32 #

Returns the number of microseconds of the second (`0..999999`) in this time span.

def milliseconds : Int32 #

Returns the number of milliseconds of the second (`0..999`) in this time span.

def minutes : Int32 #

Returns the number of full minutes of the hour (`0..59`) in this time span.

def nanoseconds : Int32 #

Returns the number of nanoseconds of the second (`0..999_999_999`) in this time span.

def negative? : Bool #

Returns `true` if `self` represents a negative time span.

    2.hours.negative? # => false
    0.days.negative?  # => false
    -3.days.negative? # => true

def positive? : Bool #

Returns `true` if `self` represents a positive time span.

    2.hours.positive? # => true
    0.days.positive?  # => false
    -3.days.positive? # => false

def seconds : Int32 #

Returns the number of full seconds of the minute (`0..59`) in this time span.

def sign : Int32 #

Returns the sign of this time span.

Values are `-1`, `0`, `1` if `self` is smaller, equal, bigger compared to `ZERO`.

def to_f : Float64 #

Alias of `#total_seconds`.

def to_i : Int64 #

Returns the number of full seconds.

def total_days : Float64 #

Converts to a (possibly fractional) number of days.

    (36.hours).total_days # => 1.5

def total_hours : Float64 #

Converts to a (possibly fractional) number of hours.

def total_microseconds : Float64 #

Converts to a number of microseconds.

def total_milliseconds : Float64 #

Converts to a number of milliseconds.

def total_minutes : Float64 #

Converts to a (possibly fractional) number of minutes.

def total_nanoseconds : Float64 #

Converts to a number of nanoseconds.

def total_seconds : Float64 #

Converts to a (possibly fractional) number of seconds.

def total_weeks : Float64 #

Converts to a (possibly fractional) number of weeks.

    (4.weeks + 5.days + 6.hours).total_weeks # => 4.75

def zero? : Bool #

Returns `true` if `self` represents a span of zero time.

    2.hours.zero?  # => false
    0.days.zero?   # => true
    1.second.zero? # => false