Fraction

On this page

Shape
Example
Good to know
In JSON
Details

An exact fraction as written: 3/4.

Use it for numbers people say as fractions, such as a share in a property. 1/2 and 2/4 stay two different values. For a percentage, use Percentage.

Shape

Field	Type	Required?
`numerator`	`Int`	Yes
`denominator`	`Int`	Yes

Example

example

Fraction { numerator: 3 denominator: 4 }

text.parse(raw, as: Fraction) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as 3/0, 3 or 3 / 4.

Good to know

denominator must be at least 1, so a negative fraction has a negative numerator.
== tells you whether two are the same. < and list.sort_by don't take it, so sort by one of its parts instead.

In JSON

A string, in a request, a response or json.write:

json

"3/4""-1/2""30000/1001"

Details

Text form, storage, how it is shown, and operations

Fraction is in the group Maths and data, and has been in Jadpo since 0.1.0.

Text form

text.from writes one standard text form, the same form text.parse reads back: 3/4, -1/2 and 30000/1001.

How it is stored

It is stored in 2 columns, each named for the field, _ and its suffix. This is -1/2:

Column	Type	Holds
`<field>_numerator`	`bigint`	`-1`
`<field>_denominator`	`bigint`	`2`

How it is shown to people

text.format(value, locale:) shows it to people in their locale.

With locale: Locale.en_gb:

Value	Shown
`3/4`	`3/4`
`-1/2`	`-1/2`
`30000/1001`	`30000/1001`

Operations

It also takes text.parse, text.from, text.format, json.read, json.write and ==. How every standard type behaves says how they work.

Markdown for agents: /docs/types/type-fraction.md.Built from Jadpo main at aee2e8f.