EnhancedAccess.all_keys
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all_keys
, go back to EnhancedAccess module for more information.
Link to this function
all_keys()
Specs
all_keys() :: Access.access_fun(data :: Access.container(), current_value :: term())
Be able to access any key in a Map or a Keyword list through the Access protocol
Examples
iex> get_in(%{a: %{b: 1}, c: %{b: 2}}, [EnhancedAccess.all_keys(), :b])
[1, 2]
iex> get_in(%{a: %{b: 1}, c: %{b: 2}}, [EnhancedAccess.all_keys()])
[%{b: 1}, %{b: 2}]
iex> get_in([a: %{b: 1}, c: %{b: 2}], [EnhancedAccess.all_keys()])
[%{b: 1}, %{b: 2}]
iex> deeper_nesting = %{a: %{b: %{c: 1}}, d: %{b: %{c: 2}}, e: %{b: 1}}
iex> get_in(deeper_nesting, [EnhancedAccess.all_keys(), :b, EnhancedAccess.optional_key(:c)])
[1, 2, nil]
iex> update_in(%{a: %{b: 1}, c: %{b: 2}}, [EnhancedAccess.all_keys(), :b], &(&1 + 1))
%{a: %{b: 2}, c: %{b: 3}}
iex> update_in([a: %{b: 1}, c: %{b: 2}], [EnhancedAccess.all_keys(), :b], &(&1 + 1))
[a: %{b: 2}, c: %{b: 3}]
iex> update_in([a: [b: 1], c: [b: 2]], [EnhancedAccess.all_keys(), :b], &(&1 + 1))
[a: [b: 2], c: [b: 3]]
iex> get_and_update_in(%{a: %{b: 1}, c: %{b: 2}}, [EnhancedAccess.all_keys(), :b], &{&1, &1 + 1})
{[1, 2], %{a: %{b: 2}, c: %{b: 3}}}
iex> pop_in(%{a: %{b: 1}, c: %{b: 2}}, [EnhancedAccess.all_keys(), :b])
{[1, 2], %{a: %{}, c: %{}}}