Krug.MapUtil (Krug v0.4.14) View Source

Utilitary safe module to manipulate Map structs.

Link to this section Summary

Functions

Delete a value from a Map, respective to a key.

Delete all values from a Map, respective to received keys in list/enum.

Obtain a value from a Map, respective to a key.

Replace/update a value from a Map, respective to a key.

Link to this section Functions

Delete a value from a Map, respective to a key.

If receive a nil/invalid/empty key, return the map received.

If receive a nil map or received map is invalid or don't contains the key, return the map received.

Example

iex > map = %{a: 1, b: 3}
iex > Krug.MapUtil.delete(map,:a)
%{b: 3}

Delete all values from a Map, respective to received keys in list/enum.

If receive a nil/invalid/empty keys list/enum, return the map received.

Ignore keys that are invalid or don't exist in received map.

Example

iex > map = %{a: 1, b: 3, c: 10}
iex > Krug.MapUtil.delete_all(map,[:a,:c,:d])
%{b: 3}

Obtain a value from a Map, respective to a key.

If the map or key received is nil/invalid return nil.

If key don't exists in map, return nil.

Example

iex > map = %{a: 1, b: 3}
iex > Krug.MapUtil.get(map,:a)
1
Link to this function

replace(map, key, newValue)

View Source

Replace/update a value from a Map, respective to a key.

If receive a nil/invalid key, return the map received.

If receive a nil map or received map is invalid or don't contains the key, return the map received.

If receives a valid value and the key received is valid and not exists in map, then add the new key and value to map.

Examples

iex > map = %{a: 1, b: 3}
iex > Krug.MapUtil.replace(map,:a,3)
%{a: 3, b: 3}
iex > map = %{a: 1, b: 3}
iex > Krug.MapUtil.replace(map,:c,101)
%{a: 3, b: 3, c: 101}