View Source Cldr.Number.Format (Cldr Numbers v2.27.2)
Functions to manage the collection of number patterns defined in Cldr.
Number patterns affect how numbers are interpreted in a localized context. Here are some examples, based on the French locale. The "." shows where the decimal point should go. The "," shows where the thousands separator should go. A "0" indicates zero-padding: if the number is too short, a zero (in the locale's numeric set) will go there. A "#" indicates no padding: if the number is too short, nothing goes there. A "¤" shows where the currency sign will go. The following illustrates the effects of different patterns for the French locale, with the number "1234.567". Notice how the pattern characters ',' and '.' are replaced by the characters appropriate for the locale.
number-pattern-examples
Number Pattern Examples
Pattern | Currency | Text |
---|---|---|
#,##0.## | n/a | 1 234,57 |
#,##0.### | n/a | 1 234,567 |
###0.##### | n/a | 1234,567 |
###0.0000# | n/a | 1234,5670 |
00000.0000 | n/a | 01234,5670 |
#,##0.00 ¤ | EUR | 1 234,57 € |
The number of # placeholder characters before the decimal do not matter, since no limit is placed on the maximum number of digits. There should, however, be at least one zero some place in the pattern. In currency formats, the number of digits after the decimal also do not matter, since the information in the supplemental data (see Supplemental Currency Data) is used to override the number of decimal places — and the rounding — according to the currency that is being formatted. That can be seen in the above chart, with the difference between Yen and Euro formatting.
Details of the number formats are described in the Unicode documentation
Link to this section Summary
Functions
Returns the decimal formats defined for a given locale.
Returns the decimal formats defined for a given locale.
Returns the currency space for a given locale and number system.
Returns the list of decimal formats in the configured locales including
the list of locales configured for precompilation in config.exs
.
Returns the list of decimal formats for a configured locale.
Returns the decimal format styles that are supported by
Cldr.Number.Formatter.Decimal
.
Returns the default grouping for a locale or raises if there is an error.
Returns the default grouping for a locale.
Returns the format styles available for a locale
.
Returns the names of the number systems for the locale
.
Returns the number system types available for a locale
Return the predfined formats for a given locale
and number_system
or raises
if either the locale
or number_system
is invalid.
Return the predfined formats for a given locale
and number_system
.
Returns the minimum grouping digits for a locale or raises if there is an error.
Returns the minimum grouping digits for a locale.
Returns the short formats available for a locale.
Link to this section Types
@type format() :: String.t()
Link to this section Functions
Returns the decimal formats defined for a given locale.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
backend
is anyCldr
backend. That is, any module that containsuse Cldr
returns
Returns
a list of decimal formats or
raises an exception
See Cldr.Number.Format.all_formats_for/2
for further information.
@spec all_formats_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.backend() ) :: {:ok, map()} | {:error, {module(), String.t()}}
Returns the decimal formats defined for a given locale.
options
Options
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
backend
is anyCldr
backend. That is, any module that containsuse Cldr
examples
Examples
Cldr.Number.Format.all_formats_for("en", MyApp.Cldr)
#=> {:ok, %{latn: %Cldr.Number.Format{
accounting: "¤#,##0.00;(¤#,##0.00)",
currency: "¤#,##0.00",
percent: "#,##0%",
scientific: "#E0",
standard: "#,##0.###",
currency_short: [{"1000", [one: "¤0K", other: "¤0K"]},
{"10000", [one: "¤00K", other: "¤00K"]},
{"100000", [one: "¤000K", other: "¤000K"]},
{"1000000", [one: "¤0M", other: "¤0M"]},
{"10000000", [one: "¤00M", other: "¤00M"]},
{"100000000", [one: "¤000M", other: "¤000M"]},
{"1000000000", [one: "¤0B", other: "¤0B"]},
{"10000000000", [one: "¤00B", other: "¤00B"]},
{"100000000000", [one: "¤000B", other: "¤000B"]},
{"1000000000000", [one: "¤0T", other: "¤0T"]},
{"10000000000000", [one: "¤00T", other: "¤00T"]},
{"100000000000000", [one: "¤000T", other: "¤000T"]}],
....
}}
@spec currency_spacing( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.Number.System.system_name(), Cldr.backend() ) :: map() | {:error, {module(), String.t()}}
Returns the currency space for a given locale and number system.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
number_system
is any valid number system or number system type returned byCldr.Number.System.number_systems_for/2
backend
is anyCldr
backend. That is, any module that containsuse Cldr
@spec decimal_format_list(Cldr.backend()) :: [format()]
Returns the list of decimal formats in the configured locales including
the list of locales configured for precompilation in config.exs
.
This function exists to allow the decimal formatter to precompile all the known formats at compile time.
arguments
Arguments
backend
is anyCldr
backend. That is, any module that containsuse Cldr
example
Example
=> Cldr.Number.Format.decimal_format_list(MyApp.Cldr)
["#", "#,##,##0%", "#,##,##0.###", "#,##,##0.00¤", "#,##,##0.00¤;(#,##,##0.00¤)",
"#,##,##0 %", "#,##0%", "#,##0.###", "#,##0.00 ¤",
"#,##0.00 ¤;(#,##0.00 ¤)", "#,##0.00¤", "#,##0.00¤;(#,##0.00¤)",
"#,##0 %", "#0%", "#0.######", "#0.00 ¤", "#E0", "%#,##0", "% #,##0",
"0", "0.000000E+000", "0000 M ¤", "0000¤", "000G ¤", "000K ¤", "000M ¤",
"000T ¤", "000mM ¤", "000m ¤", "000 Bio'.' ¤", "000 Bln ¤", "000 Bn ¤",
"000 B ¤", "000 E ¤", "000 K ¤", "000 MRD ¤", "000 Md ¤", "000 Mio'.' ¤",
"000 Mio ¤", "000 Mld ¤", "000 Mln ¤", "000 Mn ¤", "000 Mrd'.' ¤",
"000 Mrd ¤", "000 Mr ¤", "000 M ¤", "000 NT ¤", "000 N ¤", "000 Tn ¤",
"000 Tr ¤", ...]
@spec decimal_format_list_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.backend() ) :: {:ok, [String.t()]} | {:error, {module(), String.t()}}
Returns the list of decimal formats for a configured locale.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
backend
is anyCldr
backend. That is, any module that containsuse Cldr
This function exists to allow the decimal formatter to precompile all the known formats at compile time. Its use is not otherwise recommended.
example
Example
iex> Cldr.Number.Format.decimal_format_list_for("en", MyApp.Cldr)
{:ok, ["#,##0%", "#,##0.###", "#E0", "0 billion", "0 million", "0 thousand",
"0 trillion", "00 billion", "00 million", "00 thousand", "00 trillion",
"000 billion", "000 million", "000 thousand", "000 trillion", "000B", "000K",
"000M", "000T", "00B", "00K", "00M", "00T", "0B", "0K", "0M", "0T",
"¤#,##0.00", "¤#,##0.00;(¤#,##0.00)", "¤000B", "¤000K", "¤000M",
"¤000T", "¤00B", "¤00K", "¤00M", "¤00T", "¤0B", "¤0K", "¤0M", "¤0T"]}
@spec decimal_format_styles_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.Number.System.system_name(), Cldr.backend() ) :: {:ok, [atom()]} | {:error, {module(), String.t()}}
Returns the decimal format styles that are supported by
Cldr.Number.Formatter.Decimal
.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
number_system
is any valid number system or number system type returned byCldr.Number.System.number_systems_for/2
backend
is anyCldr
backend. That is, any module that containsuse Cldr
example
Example
iex> Cldr.Number.Format.decimal_format_styles_for("en", :latn, MyApp.Cldr)
{:ok, [:accounting, :currency, :currency_long, :percent,
:scientific, :standard]}
@spec default_grouping_for!( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.backend() ) :: map() | no_return()
Returns the default grouping for a locale or raises if there is an error.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
backend
is anyCldr
backend. That is, any module that containsuse Cldr
examples
Examples
iex> Cldr.Number.Format.default_grouping_for!("en", MyApp.Cldr)
%{fraction: %{first: 0, rest: 0}, integer: %{first: 3, rest: 3}}
Cldr.Number.Format.default_grouping_for!(:invalid)
** (Cldr.UnknownLocaleError) The locale :invalid is invalid
@spec default_grouping_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.backend() ) :: {:ok, non_neg_integer()} | {:error, {module(), String.t()}}
Returns the default grouping for a locale.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/0
backend
is anyCldr
backend. That is, any module that containsuse Cldr
returns
Returns
{:ok, minumum_digits}
or{:error, {exception, message}}
examples
Examples
iex> Cldr.Number.Format.default_grouping_for("en", MyApp.Cldr)
{:ok, %{fraction: %{first: 0, rest: 0}, integer: %{first: 3, rest: 3}}}
@spec format_styles_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.Number.System.system_name(), Cldr.backend() ) :: {:ok, [atom()]} | {:error, {module(), String.t()}}
Returns the format styles available for a locale
.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
number_system
is any valid number system or number system type returned byCldr.Number.System.number_systems_for/2
backend
is anyCldr
backend. That is, any module that containsuse Cldr
Format styles standardise the access to a format defined for a common
use. These types are :standard
, :currency
, :accounting
, :scientific
and :percent, :currency_short, :decimal_short, :decimal_long.
These types can be used when formatting a number for output. For example
Cldr.Number.to_string(123.456, format: :percent)
.
example
Example
iex> Cldr.Number.Format.format_styles_for("en", :latn, MyApp.Cldr)
{:ok, [:accounting, :currency, :currency_long, :currency_short,
:decimal_long, :decimal_short, :percent, :scientific, :standard]}
@spec format_system_names_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), Cldr.backend() ) :: {:ok, [atom()]} | {:error, {module(), String.t()}}
Returns the names of the number systems for the locale
.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
backend
is anyCldr
backend. That is, any module that containsuse Cldr
examples
Examples
iex> Cldr.Number.Format.format_system_names_for("th", MyApp.Cldr)
{:ok, [:latn, :thai]}
iex> Cldr.Number.Format.format_system_names_for("pl", MyApp.Cldr)
{:ok, [:latn]}
@spec format_system_types_for( Cldr.Locale.locale_name() | Cldr.LanguageTag.t(), Cldr.backend() ) :: {:ok, Keyword.t()} | {:error, {module(), String.t()}}
Returns the number system types available for a locale
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
backend
is anyCldr
backend. That is, any module that containsuse Cldr
A number system type is an identifier that categorises number systems that comprise a site of digits or rules for transliterating or translating digits and a number system name for determining plural rules and format masks.
If that all sounds a bit complicated then the default number system type
called :default
is probably what you want nearly all the time.
examples
Examples
iex> Cldr.Number.Format.format_system_types_for("pl", MyApp.Cldr)
{:ok, [:default, :native]}
iex> Cldr.Number.Format.format_system_types_for("ru", MyApp.Cldr)
{:ok, [:default, :native]}
iex> Cldr.Number.Format.format_system_types_for("th", MyApp.Cldr)
{:ok, [:default, :native]}
@spec formats_for!( Cldr.LanguageTag.t(), Cldr.Number.System.system_name(), Cldr.backend() ) :: map() | no_return()
Return the predfined formats for a given locale
and number_system
or raises
if either the locale
or number_system
is invalid.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
number_system
is any valid number system or number system type returned byCldr.Number.System.number_systems_for/2
backend
is anyCldr
backend. That is, any module that containsuse Cldr
@spec formats_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), atom() | String.t(), Cldr.backend() ) :: {:ok, map()} | {:error, {module(), String.t()}}
Return the predfined formats for a given locale
and number_system
.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
number_system
is any valid number system or number system type returned byCldr.Number.System.number_systems_for/2
orCldr.Number.System.number_system_names_for/2
backend
is anyCldr
backend. That is, any module that containsuse Cldr
example
Example
Cldr.Number.Format.formats_for "fr", :native, MyApp.Cldr
#=> {:ok, %Cldr.Number.Format{
accounting: "#,##0.00 ¤;(#,##0.00 ¤)",
currency: "#,##0.00 ¤",
percent: "#,##0 %",
scientific: "#E0",
standard: "#,##0.###"
currency_short: [{"1000", [one: "0 k ¤", other: "0 k ¤"]},
{"10000", [one: "00 k ¤", other: "00 k ¤"]},
{"100000", [one: "000 k ¤", other: "000 k ¤"]},
{"1000000", [one: "0 M ¤", other: "0 M ¤"]},
{"10000000", [one: "00 M ¤", other: "00 M ¤"]},
{"100000000", [one: "000 M ¤", other: "000 M ¤"]},
{"1000000000", [one: "0 Md ¤", other: "0 Md ¤"]},
{"10000000000", [one: "00 Md ¤", other: "00 Md ¤"]},
{"100000000000", [one: "000 Md ¤", other: "000 Md ¤"]},
{"1000000000000", [one: "0 Bn ¤", other: "0 Bn ¤"]},
{"10000000000000", [one: "00 Bn ¤", other: "00 Bn ¤"]},
{"100000000000000", [one: "000 Bn ¤", other: "000 Bn ¤"]}],
...
}}
Returns the minimum grouping digits for a locale or raises if there is an error.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
backend
is anyCldr
backend. That is, any module that containsuse Cldr
examples
Examples
iex> Cldr.Number.Format.minimum_grouping_digits_for!("en", MyApp.Cldr)
1
Cldr.Number.Format.minimum_grouping_digits_for!(:invalid)
** (Cldr.UnknownLocaleError) The locale :invalid is invalid
@spec minimum_grouping_digits_for(Cldr.LanguageTag.t(), Cldr.backend()) :: {:ok, non_neg_integer()} | {:error, {module(), String.t()}}
Returns the minimum grouping digits for a locale.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/0
backend
is anyCldr
backend. That is, any module that containsuse Cldr
returns
Returns
{:ok, minumum_digits}
or{:error, {exception, message}}
examples
Examples
iex> Cldr.Number.Format.minimum_grouping_digits_for("en", MyApp.Cldr)
{:ok, 1}
@spec short_format_styles_for( Cldr.LanguageTag.t() | Cldr.Locale.locale_name(), binary() | atom(), Cldr.backend() ) :: {:ok, [atom()]} | {:error, {module(), String.t()}}
Returns the short formats available for a locale.
arguments
Arguments
locale
is any valid locale name returned byCldr.known_locale_names/1
or aCldr.LanguageTag
struct returned byCldr.Locale.new!/2
. The default isCldr.get_locale/1
number_system
is any valid number system or number system type returned byCldr.Number.System.number_systems_for/2
backend
is anyCldr
backend. That is, any module that containsuse Cldr
example
Example
iex> Cldr.Number.Format.short_format_styles_for("he", :latn, MyApp.Cldr)
{:ok, [:currency_short, :decimal_long, :decimal_short]}