Kernel.is_function

You're seeing just the function is_function, go back to Kernel module for more information.

Specs

is_function(term()) :: boolean()

Returns true if term is a function; otherwise returns false.

Allowed in guard tests. Inlined by the compiler.

Link to this function

is_function(term, arity)

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Specs

is_function(term(), non_neg_integer()) :: boolean()

Returns true if term is a function that can be applied with arity number of arguments; otherwise returns false.

Allowed in guard tests. Inlined by the compiler.

Examples

iex> is_function(fn x -> x * 2 end, 1)
true
iex> is_function(fn x -> x * 2 end, 2)
false