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Fuzion • Library Modules • base • time • duration

»

time.duration

:

is

[Private constructor]

time.duration -- value representing a duration, i.e., a time span

This is intended for high precision time specification and measurement, it
uses a time resolution of 1ns.

The maximum value is about 580 years, so this is not intended for use in
calendars that may require time spans exceeding several centuries or millennia,
nor astrological time spans.

Fields

nanos

the duration in nano seconds

Functions

=>

[Redefinition of Any.as_string]

create a string representation of this duration. The string
representation is not accurate, it consists of at least two
and at most 4 decimal digits followed by a time unit string.

redefines:

Any.as_string

=>

this duration in whole days, omitting fractional part

=>

Type

[Inherited from Any]

Get the dynamic type of this instance. For value instances `x`, this is
equal to `type_of x`, but for `x` with a `ref` type `x.dynamic_type` gives
the actual runtime type, while `type_of x` results in the static
compile-time type.

There is no dynamic type of a type instance since this would result in an
endless hierarchy of types. So for Type values, dynamic_type is redefined
to just return Type.type.

=>

this duration in whole hours, omitting fractional part

(n u64)

=>

time.this.duration

this duration multiplied by n

(other time.this.duration)

=>

time.this.duration

this duration and another one combined

=>

this duration in micro seconds, omitting fractional part

=>

this duration in milli seconds, omitting fractional part

=>

this duration in whole minutes, omitting fractional part

=>

[Inherited from Any]

convenience prefix operator to create a string from a value.

This permits usage of `$` as a prefix operator in a similar way both
inside and outside of constant strings: $x and "$x" will produce the
same string.

=>

this duration in whole seconds, omitting fractional part

=>

this duration in whole weeks, omitting fractional part

=>

this duration in whole Julian years, omitting fractional part

Type Functions

(n u64)

=>

create duration of n years

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

=>

[Inherited from Type]

string representation of this type to be used for debugging.

result has the form "Type of '<name>'", but this might change in the future

redefines:

Any.as_string

(n u64)

=>

create duration of n days

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

type.dynamic_type

=>

Type

[Inherited from Type]

There is no dynamic type of a type instance since this would result in an
endless hierarchy of types, so dynamic_type is redefined to just return
Type.type here.

redefines:

Any.dynamic_type

(a property.orderable.this.type (in type feature), b property.orderable.this.type (in type feature))

=>

bool

[Inherited from orderable]

equality implements the default equality relation for values of this type.

This relation must be

- reflexive (equality a a),
- symmetric (equality a b = equality b a), and
- transitive ((equality a b && equality b c) : equality a c).

result is true iff 'a' is considered to represent the same abstract value
as 'b'.

redefines:

property.equatable.type.equality

(n u64)

=>

create duration of n hours

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

(n u64)

=>

create duration of n hours

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

(T

type

)

=>

bool

[Inherited from Type]

Is this type assignable to a type parameter with constraint `T`?

The result of this is a compile-time constant that can be used to specialize
code for a particular type.

is_of_integer_type(n T : numeric) => T : integer
say (is_of_integer_type 1234) # true
say (is_of_integer_type 3.14) # false

it is most useful in conjunction preconditions or `if` statements as in

pair(a,b T) is

same
  pre T : property.equatable

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same
  pre T : property.equatable
 
 
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What are effects?

=>

a = b

1
a = b
 
 
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What are effects?

or

val(n T) is

# check if T is numeric, if so
# return true if n > zero,
# return nil if T is not numeric
#
more_than_zero option bool =>
  if T : numeric then
    n > T.zero
  else
    nil

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# check if T is numeric, if so
# return true if n > zero,
# return nil if T is not numeric
#
more_than_zero option bool =>
  if T : numeric then
    n > T.zero
  else
    nil
 
 
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What are effects?

(a time.duration, b time.duration)

=>

bool

[Redefinition of property.partially_orderable.type.lteq]

total order

redefines:

property.partially_orderable.type.lteq

type.max_duration_days

=>

max value for a duration given in days

type.max_duration_hours

=>

max value for a duration given in hours

type.max_duration_micros

=>

max value for a duration given in micros

type.max_duration_millis

=>

max value for a duration given in millis

type.max_duration_minutes

=>

max value for a duration given in minutes

type.max_duration_nanos

=>

max value for a duration given in nanos

type.max_duration_seconds

=>

max value for a duration given in seconds

type.max_duration_weeks

=>

max value for a duration given in weeks

type.max_duration_years

=>

max value for a duration given in years

(n u64)

=>

create duration of n min

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

(n u64)

=>

create duration of n min

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

(n u64)

=>

create duration of n ms

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

=>

[Inherited from Type]

name of this type, including type parameters, e.g. 'option (list i32)'.

(n u64)

=>

create duration of n ns

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

=>

[Inherited from Type]

convenience prefix operator to create a string from a value.

This permits usage of `$` as a prefix operator in a similar way both
inside and outside of constant strings: $x and "$x" will produce the
same string.

NYI: Redefinition allows the type feature to be distinguished from its normal counterpart, see #3913

redefines:

Any.prefix $

(n u64)

=>

create duration of n seconds

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

(n u64)

=>

create duration of n seconds

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

type.type_value

=>

Type

[Inherited from Any]

Get a type as a value.

This is a feature with the effect equivalent to Fuzion's `expr.type` call tail.
It is recommended to use `expr.type` and not `expr.type_value`.

`type_value` is here to show how this can be implemented and to illustrate the
difference to `dynamic_type`.

(n u64)

=>

create duration of n weeks

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

(n u64)

=>

create duration of n years

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

(n u64)

=>

create duration of n µs

NYI: Turn this into a 'postfix' call, see https://fuzion-lang.dev/design/postfix_calls

0.093dev (2025-05-13 15:50:27 GIT hash 38f965e14265a6f3ba3f96f18ddedb79352428af built by fridi@fzen)