Kernel.function_exported-question-mark

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function_exported?(module, function, arity)

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Specs

function_exported?(module(), atom(), arity()) :: boolean()

Returns true if module is loaded and contains a public function with the given arity, otherwise false.

Note that this function does not load the module in case it is not loaded. Check Code.ensure_loaded/1 for more information.

Inlined by the compiler.

Examples

iex> function_exported?(Enum, :map, 2)
true

iex> function_exported?(Enum, :map, 10)
false

iex> function_exported?(List, :to_string, 1)
true