Transforms a map’s String.t keys to atom() keys.

• map is any map/0

• options is a keyword list of options. The available option is:

  • :only_existing which is set to true will only convert the binary key to an atom if the atom already exists. The default is false.

Examples

Transforms a map’s String.t values to atom() values.

• map is any map/0

• options is a keyword list of options. The available option is:

  • :only_existing which is set to true will only convert the binary value to an atom if the atom already exists. The default is false.

Examples

Recursively traverse a map and invoke a function for each key/ value pair that transforms the map.

Arguments

• map is any map/0

• function is a function or function reference that is called for each key/value pair of the provided map

Returns

• The map transformed by the recursive application of function

Example

iex> map = %{a: “a”, b: %{c: “c”}} iex> Cldr.Map.deep_map map, fn {k, v} -> …> {k, String.upcase(v)} …> end %{a: “A”, b: %{c: “C”}}

Recursively traverse a map and invoke a function for each key and a function for each value that transform the map.

• map is any map/0

• key_function is a function or function reference that is called for each key of the provided map and any keys of any submaps

• value_function is a function or function reference that is called for each value of the provided map and any values of any submaps

Returns:

• The map transformed by the recursive application of key_function and value_function

Examples

Deep merge two maps

• left is any map/0

• right is any map/0

Examples

iex> Cldr.Map.deep_merge %{a: "a", b: "b"}, %{c: "c", d: "d"}
%{a: "a", b: "b", c: "c", d: "d"}

iex> Cldr.Map.deep_merge %{a: "a", b: "b"}, %{c: "c", d: "d", a: "aa"}
%{a: "aa", b: "b", c: "c", d: "d"}

Delete all members of a map that have a key in the list of keys

Examples

iex> Cldr.Map.delete_in %{a: "a", b: "b"}, [:a]
%{b: "b"}

Transforms a map’s values to Float.t values.

• map is any map/0

The map value is converted to a float from either an atom or String.t only when the value is comprised of a valid float forma.

Keys which cannot be converted to a float are returned unchanged.

Examples

Transforms a map’s keys to Integer.t keys.

• map is any map/0

The map key is converted to an integer from either an atom or String.t only when the key is comprised of integer digits.

Keys which cannot be converted to an integer are returned unchanged.

Examples

Transforms a map’s values to Integer.t values.

• map is any map/0

The map value is converted to an integer from either an atom or String.t only when the value is comprised of integer digits.

Keys which cannot be converted to an integer are returned unchanged.

Examples

Returns the result of deep merging a list of maps

Examples

iex> Cldr.Map.merge_map_list [%{a: "a", b: "b"}, %{c: "c", d: "d"}]
%{a: "a", b: "b", c: "c", d: "d"}

Removes any leading underscores from map keys.

• map is any map/0

Examples

Rename map keys from from to to

• map is any map/0

• from is any value map key

• to is any valud map key

Examples

Transforms a map’s atom() keys to String.t keys.

• map is any map/0

Examples

Convert a camelCase string or atome to a snake_case

• string is a String.t or atom() to be transformed

This is the code of Macro.underscore with modifications. The change is to cater for strings in the format:

This_That

which in Macro.underscore gets formatted as

this__that (note the double underscore)

when we actually want

that_that

Examples

Convert map keys from camelCase to snake_case

• map is any map/0

Examples